Update to the most recent googletest package which is 1.10.0

Fix deprecation warnings caused by terminology changes in googletest:
TEST_CASE is now called TEST_SUITE, and old macro names have been deprecated.

Some tests which use googlemock cannot be built by SunStudio:
 >> Assertion:   (../lnk/declarations.cc, line 773)
so disable these on Solaris.

Change-Id: Ib829bfa946c995696029b6a229a701128dc552bb
(cherry picked from commit 5636d537b19797270638ad8f0af34f344c93dc57)