Enable building of Cgpt C++ Library for 32-bit.

The existing library had a bunch of dependencies which are too many to
build for the 32-bit platform. So this checkin prunes the dependency
list by building only things that are absolutely required for the
functionality used in 32-bit Post-Installer.

Made the use of libuuid restricted only to cgpt and unit tests so that
libcgpt-cc.a doesn't depend on it.

TEST=Built 32-bit and 64-bit. Tested 32-bit post-install.
Change-Id: Idd0826fdf507a95728fee8adac9520e26f05d469
Reviewed-on: https://gerrit.chromium.org/gerrit/16433
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Reviewed-by: Sonny Rao <sonnyrao@chromium.org>
Commit-Ready: Jay Srinivasan <jaysri@chromium.org>
Tested-by: Jay Srinivasan <jaysri@chromium.org>
10 files changed