* solib-svr4.c (svr4_current_sos): Move up initialization of
l_addr, such that it clearly covers all cases.
gdb/testsuite/ChangeLog:
* gdb.base/prelink.exp: Anchor tested-for regular expression
on gdb prompt.
* gdb.base/prelink.exp: Likewise. Add -q to prelink runs.
Rename executable to prelinkt. Don't re-prelink if we didn't
get a core file. Test prelink -u exit status to tell whether
prelinking failed. Use gdb_test_multiple.