Revert back deleted glib-specific warning options
Revert back deleted glib-specific warning options

Commit f525ba7796a2fd35bf55e88fb94459b2277fcd67 copied warning macros
from gnulib without keeping glib-specific settings.  This build-breaker
brings back those needed ones except unused-parameter, which is no
longer needed.

Signed-off-by: Martin Kletzander <e82f23e74d43760279ebcc505dac4ae70d5627d0@redhat.com>

libvirt/libvirt-glib,libvirt/libvirt-glib,libvirt/libvirt-glib