Only add the user supplied CFLAGS after running any autoconf tests.
* configure.ac: Only add the user supplied CFLAGS after running any autoconf tests.
If the user's CFLAGS include -Werror, then some configure tests fail.
To avoid this, we only add the user's CFLAGS after all of the
configure tests have run.
- Signed-off-by: Neal H. Walfield <neal@g10code.com>