Upgrade gtest to r267 and gmock to r173.

testing/gmock/scripts/gmock-config.in

 #!/bin/sh
 
 # These variables are automatically filled in by the configure script.
 name="@PACKAGE_TARNAME@"
 version="@PACKAGE_VERSION@"
 
 show_usage()
 {
   echo "Usage: gmock-config [OPTIONS...]"
 }
@@ skipping 241 matching lines @@
   exit 1
 elif ! "${gtest_config}" "--exact-version=@GTEST_VERSION@"; then
   echo "The Google Test found is not the same version as Google Mock was " \
        "built against" >&2
   exit 1
 fi
 
 # Add the necessary Google Test bits into the various flag variables
 gmock_cppflags="${gmock_cppflags} `${gtest_config} --cppflags`"
 gmock_cxxflags="${gmock_cxxflags} `${gtest_config} --cxxflags`"
-gmock_ldflags="${gmock_ldflags}`${gtest_config} --ldflags`"
+gmock_ldflags="${gmock_ldflags} `${gtest_config} --ldflags`"
 gmock_libs="${gmock_libs} `${gtest_config} --libs`"
 
 # Do an installation query if requested.
 if test -n "$do_query"; then
   case $do_query in
     prefix)           echo $prefix;       exit 0;;
     exec-prefix)      echo $exec_prefix;  exit 0;;
     libdir)           echo $libdir;       exit 0;;
     includedir)       echo $includedir;   exit 0;;
     version)          echo $version;      exit 0;;
@@ skipping 21 matching lines @@
 # Do the output in the correct order so that these can be used in-line of
 # a compiler invocation.
 output=""
 test "$echo_cppflags" = "yes" && output="$output $gmock_cppflags"
 test "$echo_cxxflags" = "yes" && output="$output $gmock_cxxflags"
 test "$echo_ldflags" = "yes"  && output="$output $gmock_ldflags"
 test "$echo_libs" = "yes"     && output="$output $gmock_libs"
 echo $output
 
 exit 0