Include config.h before anything else in *.c

Debian bug#749008 <https://bugs.debian.org/749008>

Reported-by: Michael Tautschnig <mt@debian.org>
Signed-off-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
11 files changed