libsigc++: Added

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>
glibmm: Added

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>
cairomm: Added

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>
pangomm: Added

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>
atkmm: Added

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>
mm-common: Added

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>
gtkmm: Added

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>
gtkmm3: Added

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackware-id.org>