Adapt gcc3_linux_intel to Clang 3.4

...same as 5ba3d1740b03efa394b2d2bf34fb8a8d3db2331d "Clean up declaration of
__cxa_get_globals" plus c17f01753ce94e9f57d6e4a2763152240fbcd50a "...and
similarly for __cxa_allocate_exception and __cxa_throw."

Change-Id: I02361cfca260577ce13fb634b5637938daf0283d
Linux x86 nss/lib/freebl/mpi/mpi_x86.s confusion of mp_digit size

see <https://groups.google.com/forum/#!topic/mozilla.dev.security/n16bQj4qZHc>

Change-Id: I6635d187b29d6b50fbccaf3f4c29d72660fcaa5e
Hack for mysql_config under linux32

Change-Id: I3a6b4aae36df7e23c05da9fd27b0588a6228b92b