[Gtkradiant] [Bug 89] implement Quake 1 support

[gtkradiant@zerowing.idsoftware.com]

http://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=89





------- Additional Comments From ttimo@idsoftware.com  2003-03-24 07:47 -------
If I had to choose one precise point to start from, it would be to create a
q1.game (inspired from the hl one and the q3 one), and to create a synapse.conf
for q1 (look at the existing ones too). Then, replace add a map format minor for
q1 the same way we have for Q3/HL etc., and write the appropriate code to
load/save q1 format.