Use GLM 0.9.2.7 in olddeps builds
Don't warn on unused CMake CLI vraiables
arx: Adjust flag to use Qt4
arx: Use SDL1 in olddeps build
arx: Add an olddeps debug build
arx: Remove unsupported Boost builds
Add Boost 1.55 builds
Use Boost 1.48 in olddeps builds
Remove Clang 3.0 builds because of false positives

They were already disable for innoextract due to compiler crashes.