Merge remote-tracking branch 'google/release' into develop
Merge remote-tracking branch 'google/release' into develop
Merge remote-tracking branch 'google/master' into develop
Merge remote-tracking branch 'google/master' into develop
Use LIB_INSTALL_DIR to initialize LIBRARY_INSTALL_DIR.

In particular the Fedora package maintainers pass LIB_INSTALL_DIR instead of LIBRARY_INSTALL_DIR.
Merge remote-tracking branch 'google/develop'