* include/private/gc_locks.h (GC_test_and_set): Support
	Linux/mips.
	(GC_TEST_AND_SET_DEFINED): Likewise.

	* include/private/gcconfig.h (DYNAMIC_LOADING): Defined for
	Linux/mips.
	(DATAEND): Likewise.
	(LINUX_STACKBOTTOM): Likewise.
	(STACKBOTTOM): Removed for Linux/mips.

From-SVN: r54444