compile warning: unused var
fix #4056
fix #4059
fix #4059 (2)
"fix" #4039
fix? #4059 (3, this one makes no sense)
fix #3963 (sweepFiring defaults to true)
not there
fix #4061
fix #4063
implement #4044 (Lua-bindable normal buffer)
warnings--;
fix headless linkage
fix headless tests
minor
set GL state before deferred pass
fix part of #4068 (wrong cursor for certain attack commands)
MobileCAI: replace some dynamic_cast's
fix #4069
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