Updates to make install_third_party build gtest and gmock on windows.

build_tools/install_gtest/nacl-gtest-1.5.0.patch

Index: build_tools/install_gtest/nacl-gtest-1.5.0.patch
===================================================================
--- build_tools/install_gtest/nacl-gtest-1.5.0.patch	(revision 760)
+++ build_tools/install_gtest/nacl-gtest-1.5.0.patch	(working copy)
@@ -1,7 +1,7 @@
 diff -Naur gtest-1.5.0/Makefile gtest-1.5.0.nacl/Makefile
 --- gtest-1.5.0/Makefile	1969-12-31 17:00:00.000000000 -0700
 +++ gtest-1.5.0.nacl/Makefile	2010-07-08 09:49:37.000000000 -0600
-@@ -0,0 +1,25 @@
+@@ -0,0 +1,32 @@
 +CXXFLAGS = -O0 -g
 +INCLUDE = -Iinclude -I.
 +LIB_GTEST = libgtest.a
@@ -13,6 +13,13 @@
 +            gtest-test-part.o \
 +            gtest-typed-test.o
 +
++# Necessary because we can't CD to the obj directory on windows.
++OBJ_LIST = $(OBJ_DIR)/gtest.o \
++           $(OBJ_DIR)/gtest-filepath.o \
++           $(OBJ_DIR)/gtest-port.o \
++           $(OBJ_DIR)/gtest-test-part.o \
++           $(OBJ_DIR)/gtest-typed-test.o
++
 +all: $(LIB_GTEST)
 +	@echo "Making libgtest"
 +
@@ -26,13 +33,13 @@
 +	$(CXX) -c $(INCLUDE) $(CXXFLAGS) $< -o $(OBJ_DIR)/$@
 +
 +$(LIB_GTEST): $(OBJ_DIR) $(OBJ_FILES)
-+	cd $(OBJ_DIR) && $(AR) rcs ../$(LIB_GTEST) $(OBJ_FILES)
++	$(AR) rcs $(LIB_GTEST) $(OBJ_LIST)
 diff -Naur gtest-1.5.0/include/gtest/gtest.h gtest-1.5.0.nacl/include/gtest/gtest.h
 --- gtest-1.5.0/include/gtest/gtest.h	2010-04-15 16:02:03.000000000 -0600
 +++ gtest-1.5.0.nacl/include/gtest/gtest.h	2010-07-08 09:49:37.000000000 -0600
 @@ -56,7 +56,6 @@
-
- #include <gtest/internal/gtest-internal.h>
+ #include <gtest/internal/gtest-internal.h>ls
+ 
  #include <gtest/internal/gtest-string.h>
 -#include <gtest/gtest-death-test.h>
  #include <gtest/gtest-message.h>