Subject: unnecessarily created autom4ate.cache directory

From: Ondřej Bílka <[email-masked]>
Date: Fri, 11 Oct 2013 18:24:43 +0200

Hi, A glibc supports builds only from separate build directory than source
directory. In source directory a autom4ate.cache is created.

See following bug entry.
https://sourceware.org/bugzilla/show_bug.cgi?id=14120