Replacing g_log_set_default_handler with g_log_set_handler
Replacing g_log_set_default_handler with g_log_set_handler

Replacing g_log_set_default_handler with g_log_set_handler for all message types except G_LOG_LEVEL_DEBUG, as setting default handler means it catches messages from all other domains, t.i. from other libraries and applications.

Closes: https://bugzilla.gnome.org/show_bug.cgi?id=703192

Distrotech/libgdata,pwithnall/libgdata,Distrotech/libgdata,Pecisk/libgdata-gtasks,Distrotech/libgdata,Pecisk/libgdata,Pecisk/libgdata-gtasks,Pecisk/libgdata-gtasks,pwithnall/libgdata,GNOME/libgdata,Pecisk/libgdata,Pecisk/libgdata