Fix libtool detection of --as-needed flag

The fix for -Wl,--as-needed in commit b0f9477f assumes that
--as-needed/--no-as-needed is the only option given in a -Wl line.
However, it is perfectly valid to specify multiple flags comma
separated after a single -Wl (e.g. the default LDFLAGS in Arch
Linux makepkg.conf).

Adjust the fix so it detect --as-needed in a more general context

> readelf -d lib/libalpm/.libs/libalpm.so.?.?.? | grep NEEDED | wc -l
Before: 13
After: 5

Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>

0 files changed, 0 insertions, 0 deletions