Enable sys_sendmmsg() on arm32.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13908 a5019735-40e9-0310-863c-91ae7b9d1cf9
For the ld.so redirections for arm32-linux, allow the soname
ld-linux-armhf.so.3 in addition to the existing name, ld-linux.so.3.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13909 a5019735-40e9-0310-863c-91ae7b9d1cf9