tools/glib-ginterface-gen.py: allow D-Bus methods' names to be C keywords
tools/glib-ginterface-gen.py: allow D-Bus methods' names to be C keywords

For instance, if you implement a Register() method, it would mangle to
register(), but register is a keyword. Appending _cb (to get
register_cb()) works around this. This is safe because the interface
struct isn't API (it's only visible within its svc-*.c file).

Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib,Distrotech/telepathy-glib