ProjectileDrawer: setup proper GL state for DrawProjectile
fix part of #3701: made "Player Only: Testing Sandbox" work again
fix clang warning spam
try to fix #3704 (units can jump out of water because of an explosion)
fix #3704
fix #3697

Spring.GetPositionLosState now returns a 4th argument which indicates
if a position is actively being radar- or sonar-jammed by any allyteam
fix #3683
Revert "try to fix #3704 (units can jump out of water because of an explosion)"

we want jumping submarines! my change was way to inaccurate it seems :)

This reverts commit 7cfb2a63c71e8c54ea0590a343f540cf96552b8c.
fix #3713 (oops)
Merge branch 'develop' of github.com:spring/spring into develop
make camera->pos private to make debugging easier in future
fix script.txt loading from CWD
*nix stacktrace: better detect binary location
pass LOG_LEVEL to stacktrace translator, so watchdog ones are issued as warnings now and not as errors anymore
minor in Matrix44f
fix mapborder drawing on maps with waterplanecolor
access() use consts instead of magic numbers
! up boost requirement to 1.47 and always link boost::chrono
add new SpringTime UnitTest that tests/benchmarks different clock implementations
minor in Matrix44f UnitTest