+ Support GOT/gp-relative constants in GAS and internal assemblers, MIPS and i386.
* Change MIPS jump tables in PIC mode to use gp-relative constants, making them ABI-compliant and not requiring dynamic relocations.

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@26886 3ad0048d-3df7-0310-abae-a5850022a9f2