[Samba] Samba 4 on AIX with XLC

[Benjamin Huntsman]

Also, shouldn't "make clean" delete all the .so's in the build tree?  It doesn't.  After figuring out that that may be tripping me up, I used 'find . name "*.so" -print | while read so; do rm $so; done' to take care of that.  Who knows what other cruft may be lying around though... at this point I may have to just nuke the build tree and re-extract the tarball...

Thanks!

-Ben