glib: add a compatibility interface for g_timeout_add_seconds
glib: add a compatibility interface for g_timeout_add_seconds

Signed-off-by: Anthony Liguori <0212dd00c21e75e861d960b0cf505645317aaa0b@us.ibm.com>

SPICE/libcacard,elmarco/libcacard,elmarco/libcacard,SPICE/libcacard