reworked deferred rendering to support specular. mrt can be reconfigured by TCs if desired.
reworked q3bsp deluxemap code (so it no longer bugs out).
fixed a few warnings.
updated fteqcc to try to cope with xonotic. still not working (xonotic fails from bound checks).
reworked shader conditionals to support elif. added some directives from QF(aka: warsow)
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5158 fc73d0e0-1445-4013-8a0c-d673dee63da5
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