Add gflags ports

docs/port_list.md

 # List of available ports
 
 Port are listed in alphabetical order, with links to the upstream
 source archive and the patch used when building for NaCl.
 This listing is auto-generated by
 [generate\_port\_list.py](https://chromium.googlesource.com/webports/+/master/build_tools/generate_port_list.py).
 
 | **Name** | **Version** | **Upstream Archive** | **NaCl Patch** | **Disabled Libc** | **Disabled Arch** |
 | :--- | :--- | :--- | :--- | :--- | :--- |
 | [agg]                     | 2.5             | [agg-2.5.tar.gz][agg_upstream]                | [1 KiB][agg_patch]   | [] | [] |
@@ skipping 88 matching lines @@
 | [fuseiso]                 | 20070708        | [fuseiso-20070708.tar.bz2][fuseiso_upstream]  | [22 KiB][fuseiso_patch] | [] | [] |
 | [fvwm]                    | 2.6.5           | [fvwm-2.6.5.tar.bz2][fvwm_upstream]           | [7 KiB][fvwm_patch]  | [] | [] |
 | [gawk]                    | 4.1.1           | [gawk-4.1.1.tar.gz][gawk_upstream]            | [1 KiB][gawk_patch]  | [] | [] |
 | [gc]                      | 6.8             | [gc6.8.tar.gz][gc_upstream]                   | [21 KiB][gc_patch]   | [] | [] |
 | [gcc]                     | 396037926       | [None][gcc_upstream]                          | [4 KiB][gcc_patch]   | newlib | [] |
 | [gcc-avr]                 | 5.1.0           | [gcc-5.1.0.tar.bz2][gcc-avr_upstream]         | [7 KiB][gcc-avr_patch] | [] | arm |
 | [gdb]                     | 7.7             | [None][gdb_upstream]                          | [7 KiB][gdb_patch]   | [] | [] |
 | [gdk-pixbuf]              | 2.30.8          | [gdk-pixbuf-2.30.8.tar.xz][gdk-pixbuf_upstream] |                      | [] | [] |
 | [gegl]                    | 0.2.0           | [gegl-0.2.0.tar.bz2][gegl_upstream]           |                      | [] | [] |
 | [gettext]                 | 0.19.2          | [gettext-0.19.2.tar.xz][gettext_upstream]     | [4 KiB][gettext_patch] | [] | [] |
+| [gflags]                  | 2.1.2           | [gflags-2.1.2.tar.gz][gflags_upstream]        | [583 B][gflags_patch] | [] | [] |
 | [gforth]                  | 0.7.2           | [gforth-0.7.2.tar.gz][gforth_upstream]        | [9 KiB][gforth_patch] | [] | [] |
 | [giflib]                  | 4.2.1           | [giflib-4.2.1.tar.bz2][giflib_upstream]       |                      | [] | [] |
 | [gimp]                    | 2.8.14          | [gimp-2.8.14.tar.bz2][gimp_upstream]          | [937 B][gimp_patch]  | [] | [] |
 | [git]                     | 2.3.0           | [git-2.3.0.tar.gz][git_upstream]              | [18 KiB][git_patch]  | [] | [] |
 | [glib]                    | 2.45.2          | [glib-2.45.2.tar.xz][glib_upstream]           | [3 KiB][glib_patch]  | [] | [] |
 | [glproto]                 | 1.4.15          | [glproto-1.4.15.tar.bz2][glproto_upstream]    |                      | [] | [] |
 | [gmock]                   | 1.5.0           | [gmock-1.5.0.tar.gz][gmock_upstream]          | [657 B][gmock_patch] | [] | [] |
 | [gmp]                     | 5.0.2           | [gmp-5.0.2.tar.bz2][gmp_upstream]             |                      | [] | [] |
 | [google-api-python-client] | 1.2             | [google-api-python-client-1.2.tar.gz][google-api-python-client_upstream] |                      | [] | [] |
 | [grep]                    | 2.21            | [grep-2.21.tar.xz][grep_upstream]             | [5 KiB][grep_patch]  | [] | [] |
@@ skipping 185 matching lines @@
 | [xkeyboard-config]        | 2.6             | [xkeyboard-config-2.6.tar.bz2][xkeyboard-config_upstream] | [10 KiB][xkeyboard-config_patch] | [] | [] |
 | [xorg-server]             | 1.12.2          | [xorg-server-1.12.2.tar.bz2][xorg-server_upstream] | [9 KiB][xorg-server_patch] | [] | [] |
 | [xproto]                  | 7.0.23          | [xproto-7.0.23.tar.bz2][xproto_upstream]      | [902 B][xproto_patch] | [] | [] |
 | [xtrans]                  | 1.2.7           | [xtrans-1.2.7.tar.bz2][xtrans_upstream]       | [2 KiB][xtrans_patch] | [] | [] |
 | [xz]                      | 5.2.0           | [xz-5.2.0.tar.xz][xz_upstream]                |                      | [] | [] |
 | [yajl]                    | 2.0.4           | [yajl-2.0.4.zip][yajl_upstream]               | [2 KiB][yajl_patch]  | [] | [] |
 | [yt]                      | 3.0             | [yt-3.0.tar.gz][yt_upstream]                  |                      | [] | [] |
 | [zeromq]                  | 4.0.3           | [zeromq-4.0.3.tar.gz][zeromq_upstream]        | [4 KiB][zeromq_patch] | [] | [] |
 | [zlib]                    | 1.2.8           | [zlib-1.2.8.tar.gz][zlib_upstream]            | [592 B][zlib_patch]  | [] | [] |
 
-_Total = 321_
+_Total = 322_
 
 # Local Ports (not based on upstream sources) =
 
 - [agg-demo][agg-demo]
 - [alut-demo][alut-demo]
 - [corelibs][corelibs]
 - [devenv][devenv]
 - [devenv-latest][devenv-latest]
 - [dreadthread][dreadthread]
 - [geturl][geturl]
@@ skipping 250 matching lines @@
 [gdb_patch]: https://chromium.googlesource.com/webports/+/master/ports/gdb/nacl.patch
 [gdb_upstream]: https://chromium.googlesource.com/native_client/nacl-binutils.git@5deb479
 [gdk-pixbuf]: https://chromium.googlesource.com/webports/+/master/ports/gdk-pixbuf
 [gdk-pixbuf_upstream]: https://download.gnome.org/sources/gdk-pixbuf/2.30/gdk-pixbuf-2.30.8.tar.xz
 [gegl]: https://chromium.googlesource.com/webports/+/master/ports/gegl
 [gegl_upstream]: http://download.gimp.org/pub/gegl/0.2/gegl-0.2.0.tar.bz2
 [gettext]: https://chromium.googlesource.com/webports/+/master/ports/gettext
 [gettext_patch]: https://chromium.googlesource.com/webports/+/master/ports/gettext/nacl.patch
 [gettext_upstream]: http://ftp.gnu.org/pub/gnu/gettext/gettext-0.19.2.tar.xz
 [geturl]: https://chromium.googlesource.com/webports/+/master/ports/geturl
+[gflags]: https://chromium.googlesource.com/webports/+/master/ports/gflags
+[gflags_patch]: https://chromium.googlesource.com/webports/+/master/ports/gflags/nacl.patch
+[gflags_upstream]: https://github.com/gflags/gflags/archive/v2.1.2/gflags-2.1.2.tar.gz
 [gforth]: https://chromium.googlesource.com/webports/+/master/ports/gforth
 [gforth_patch]: https://chromium.googlesource.com/webports/+/master/ports/gforth/nacl.patch
 [gforth_upstream]: http://www.complang.tuwien.ac.at/forth/gforth/gforth-0.7.2.tar.gz
 [giflib]: https://chromium.googlesource.com/webports/+/master/ports/giflib
 [giflib_upstream]: http://downloads.sf.net/project/giflib/giflib-4.x/giflib-4.2.1.tar.bz2
 [gimp]: https://chromium.googlesource.com/webports/+/master/ports/gimp
 [gimp_patch]: https://chromium.googlesource.com/webports/+/master/ports/gimp/nacl.patch
 [gimp_upstream]: http://download.gimp.org/pub/gimp/v2.8/gimp-2.8.14.tar.bz2
 [gimp-app]: https://chromium.googlesource.com/webports/+/master/ports/gimp-app
 [git]: https://chromium.googlesource.com/webports/+/master/ports/git
@@ skipping 522 matching lines @@
 [xz_upstream]: http://tukaani.org/xz/xz-5.2.0.tar.xz
 [yajl]: https://chromium.googlesource.com/webports/+/master/ports/yajl
 [yajl_patch]: https://chromium.googlesource.com/webports/+/master/ports/yajl/nacl.patch
 [yajl_upstream]: http://github.com/lloyd/yajl/archive/2.0.4/yajl-2.0.4.zip
 [zeromq]: https://chromium.googlesource.com/webports/+/master/ports/zeromq
 [zeromq_patch]: https://chromium.googlesource.com/webports/+/master/ports/zeromq/nacl.patch
 [zeromq_upstream]: http://download.zeromq.org/zeromq-4.0.3.tar.gz
 [zlib]: https://chromium.googlesource.com/webports/+/master/ports/zlib
 [zlib_patch]: https://chromium.googlesource.com/webports/+/master/ports/zlib/nacl.patch
 [zlib_upstream]: http://www.zlib.net/zlib-1.2.8.tar.gz