build(waf): fix the abi_match for the pdb library

build(waf): fix the abi_match for the pdb library

The global wildcard match is automatically added by the parsing code
if the global match list is empty. Specifying an explicit '*' as the only
global match lets the parsing code add a second '*' to the local list,
which is an error tolerated on my linux by ld (the GNU linker), but
not by the stricter GNU ELF linker "gold".

Pair-Programmed-With: Gregor Beck <gbeck@sernet.de>

Signed-off-by: Gregor Beck <gbeck@sernet.de>
Signed-off-by: Michael Adam <obnox@samba.org>
Signed-off-by: Alexander Bokovoy <ab@samba.org>
Autobuild-User(master): Alexander Bokovoy <ab@samba.org>
Autobuild-Date(master): Wed Jan 16 21:31:00 CET 2013 on sn-devel-104