automake 1.12+ build fix
automake 1.12+ build fix

Fix build issues arising with recent automake versions as documented
here:
http://lists.gnu.org/archive/html/bug-automake/2012-05/msg00009.html

Also make autoconf stop complaining about non-POSIX variable names
as described here:
http://gnu-automake.7480.n7.nabble.com/Warn-non-POSIX-variable-name-td4931.html

code4bones/udis86,radare/udis86,vmt/udis86,nfedera/vmt-udis86,unixfreaxjp/udis86,radare/udis86,madmoose/udis86,stephenfewer/udis86,radare/udis86,DoomHammer/udis86,bSr43/udis86,unixfreaxjp/udis86,code4bones/udis86,unixfreaxjp/udis86,semi/udis86,stephenfewer/udis86,vmt/udis86,DoomHammer/udis86,vmt/udis86,semi/udis86,nfedera/vmt-udis86,nfedera/vmt-udis86,bSr43/udis86,code4bones/udis86,DoomHammer/udis86,madmoose/udis86,stephenfewer/udis86,bSr43/udis86,semi/udis86,madmoose/udis86