Build libevent on Mac

third_party/libevent/README.google

Index: third_party/libevent/README.google
===================================================================
--- third_party/libevent/README.google	(revision 2378)
+++ third_party/libevent/README.google	(working copy)
@@ -1,19 +1,20 @@
-This contains a copy of libevent-1.4.7-stable, initially 
-for use on Linux, but also perhaps on BSD / Solaris / Mac.
+This contains a copy of libevent-1.4.7-stable for use on Linux and Mac
 
 Rather than use libevent's own build system, we just build a Chrome 
-static library using SConstruct.
+static library using SConscript
 
 Changes from upstream:
-1) add config.h from a run of configure on a Linux development box.
-2) add SConstruct
+1) add linux/config.h from a run of configure on a Linux development box.
+2) add SConscript and libevent.xcodeproj
 3) quotes.patch is applied to allow libevent to be used without
 being installed (alternative is adding crazy -I arguments to the commandline)
 4) The directories WIN32-Code and WIN32-Prj are not included
 
-SConstruct does not include a few files that don't build on Linux:
+SConscript does not include a few files that don't build on Linux:
     devpoll.c, evport.c, kqueue.c
+libevent.xcodeproj does not include a few files that don't build on the Mac:
+    devpoll.c, epoll.c, epoll_sub.c, evport.c
 
-TODO: currently we -I the source directory, which exposes config.h, which
-is dangerous.  We should probably add an include directory of symlinks
-back to the real .h files, or something.
+TODO: currently we -I the source directory, which exposes event-config.h, which
+is dangerous as this file was generated for Linux and is not entirely correct on
+other platforms.