Skip deprecated g_type_init() for GLib 2.36
[lib] cleanup some compiler warnings

   - lib/searpc-client.c:353:1: warning: control reaches end of non-void function [-Wreturn-type]
   - lib/searpc-utils.c:93:13: warning: enumeration value 'JSON_ARRAY' not handled in switch [-Wswitch]
Merge pull request #9 from Chilledheart/deprecated_g_type_init

Skip deprecated g_type_init() for GLib 2.36
Merge pull request #12 from Chilledheart/patch-1

[lib] cleanup some compiler warning