Move warning flags from autogen.sh to configure.ac

Reviewed-by: iustinp

autogen.sh

@@ -12,6 +12,6 @@ mkdir -p autotools
 
 ${ACLOCAL:-aclocal} -I autotools
 ${AUTOCONF:-autoconf}
-${AUTOMAKE:-automake} --add-missing -Wall -Wno-portability
+${AUTOMAKE:-automake} --add-missing
 
 rm -rf autom4te.cache

configure.ac

@@ -12,7 +12,7 @@ AC_PREREQ(2.59)
 AC_INIT(ganeti, gnt_version_full, ganeti@googlegroups.com)
 AC_CONFIG_AUX_DIR(autotools)
 AC_CONFIG_SRCDIR(configure)
-AM_INIT_AUTOMAKE([foreign tar-ustar 1.9])
+AM_INIT_AUTOMAKE([1.9 foreign tar-ustar -Wall -Wno-portability])
 
 AC_SUBST([VERSION_MAJOR], gnt_version_major)
 AC_SUBST([VERSION_MINOR], gnt_version_minor)