Various syntax-check fixes.

Make a pass over the syntax-check files, tightening up regex's,
un-ignoring certain files, and cleaning things up.

Signed-off-by: Chris Lalancette <clalance@redhat.com>

.x-sc_prohibit_strcmp_and_strncmp

@@ -1 +1,8 @@
 ^gnulib/
+^ChangeLog-old$
+^examples/domain-events/events-c/event-test\.c$
+^src/internal\.h$
+^src/lxc/lxc_container\.c$
+^src/node_device/node_device_devkit\.c$
+^src/node_device/node_device_hal\.c$
+^src/storage/parthelper\.c$