Fix out-of-range constants for some 32 bit insns, presumably tolerated
by older assembler versions but not newer ones.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13996 a5019735-40e9-0310-863c-91ae7b9d1cf9
Enable sys_fchmodat.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13997 a5019735-40e9-0310-863c-91ae7b9d1cf9