Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/docs/INSTALL

Index: third_party/freetype2/src/docs/INSTALL
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+
+There are  several ways  to build the  FreeType library,  depending on
+your system and the level of  customization you need.  Here is a short
+overview of the documentation available:
+
+
+I. Normal installation and upgrades
+===================================
+
+  1. Unix Systems (including Mac OS X, Cygwin, and MSys on Windows)
+
+    Please read `INSTALL.UNIX' to install or upgrade FreeType  2 on  a
+    Unix system.   Note  that  you  *need*  GNU  Make   for  automatic
+    compilation,  since other make tools won't work (this includes BSD
+    Make).
+
+    GNU Make VERSION 3.80 OR NEWER IS NEEDED!
+
+
+  2. On VMS with the `mms' build tool
+
+    See `INSTALL.VMS' for installation instructions on this platform.
+
+
+  3. Other systems using GNU Make
+
+    On non-Unix platforms,  it is possible to build  the library using
+    GNU Make  utility.  Note that  *NO OTHER MAKE TOOL  WILL WORK*[1]!
+    This  methods supports  several  compilers on  Windows, OS/2,  and
+    BeOS, including MinGW, Visual C++, Borland C++, and more.
+
+    Instructions are provided in the file `INSTALL.GNU'.
+
+
+  4. With an IDE Project File (e.g., for Visual Studio or CodeWarrior)
+
+    We provide a  small number of `project files'  for various IDEs to
+    automatically build  the library as  well.  Note that  these files
+    are  not supported  and only  sporadically maintained  by FreeType
+    developers, so don't expect them to work in each release.
+
+    To find them, have a  look at the content of the `builds/<system>'
+    directory, where <system> stands for your OS or environment.
+
+
+  5. Using cmake
+
+    See the top-level `CMakeLists.txt' file for more information.
+
+
+  6. From you own IDE, or own Makefiles
+
+    If  you  want  to  create   your  own  project  file,  follow  the
+    instructions   given  in  the   `INSTALL.ANY'  document   of  this
+    directory.
+
+
+II. Custom builds of the library
+================================
+
+  Customizing the compilation  of FreeType is easy, and  allows you to
+  select only the components of  the font engine that you really need.
+  For more details read the file `CUSTOMIZE'.
+
+
+----------------------------------------------------------------------
+
+[1] make++, a make tool written in Perl, has sufficient support of GNU
+    make extensions to build FreeType.  See
+
+      http://makepp.sourceforge.net
+
+    for more information; you need version 1.19 or newer, and you must
+    pass option `--norc-substitution'.
+
+----------------------------------------------------------------------
+
+Copyright 2000-2015 by
+David Turner, Robert Wilhelm, and Werner Lemberg.
+
+This  file is  part of  the FreeType  project, and  may only  be used,
+modified,  and distributed  under the  terms of  the  FreeType project
+license,  LICENSE.TXT.  By  continuing to  use, modify,  or distribute
+this file you  indicate that you have read  the license and understand
+and accept it fully.
+
+
+--- end of INSTALL ---