Move allegro-devel to allegro; 4.4 is hardly a devel version any more.
Minor fix required in emulators/o2em.
Remove allegrogl, which is broken and included in allegro-4.4 anyway.
Update allegro-devel to 5.0.7 [1]
PR: ports/172981 [1]
Submitted by: nemysis <nemysis@gmx.ch> [1]