Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/builds/unix/unix.mk

Index: third_party/freetype2/src/builds/unix/unix.mk
diff --git a/third_party/freetype2/src/builds/unix/unix.mk b/third_party/freetype2/src/builds/unix/unix.mk
new file mode 100644
index 0000000000000000000000000000000000000000..542aa7fe3b94bbf60e5e7676a872147eed13a597
--- /dev/null
+++ b/third_party/freetype2/src/builds/unix/unix.mk
@@ -0,0 +1,62 @@
+#
+# FreeType 2 configuration rules for UNIX platforms
+#
+
+
+# Copyright 1996-2015 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.
+
+# We need these declarations here since unix-def.mk is a generated file.
+BUILD_DIR := $(TOP_DIR)/builds/unix
+PLATFORM  := unix
+
+have_mk := $(wildcard $(OBJ_DIR)/unix-def.mk)
+ifneq ($(have_mk),)
+  # We are building FreeType 2 not in the src tree.
+  include $(OBJ_DIR)/unix-def.mk
+  include $(OBJ_DIR)/unix-cc.mk
+else
+  include $(BUILD_DIR)/unix-def.mk
+  include $(BUILD_DIR)/unix-cc.mk
+endif
+
+ifdef BUILD_PROJECT
+
+  .PHONY: clean_project distclean_project
+
+  # Now include the main sub-makefile.  It contains all the rules used to
+  # build the library with the previous variables defined.
+  #
+  include $(TOP_DIR)/builds/$(PROJECT).mk
+
+
+  # The cleanup targets.
+  #
+  clean_project: clean_project_unix
+  distclean_project: distclean_project_unix
+
+
+  # This final rule is used to link all object files into a single library.
+  # It is part of the system-specific sub-Makefile because not all
+  # librarians accept a simple syntax like
+  #
+  #   librarian library_file {list of object files}
+  #
+    $(PROJECT_LIBRARY): $(OBJECTS_LIST)
+  ifdef CLEAN_LIBRARY
+	    -$(CLEAN_LIBRARY) $(NO_OUTPUT)
+  endif
+	    $(LINK_LIBRARY)
+
+  include $(TOP_DIR)/builds/unix/install.mk
+
+endif
+
+
+# EOF