StdScheduler: Split into StdSchedulerWin32/StdSchedulerPoll/StdSchedulerMac
C4AbstractApp: ScheduleProcs timeout parameter defaults to 1000/36 instead of -1 so the timeout is not determined to be infinity down the road, leading to mac version not getting out of the poll call anymore
Merge branch 'master' into macscheduler
adjusted some particles (f.e. smoke slightly brighter, foundry more subtle)

see http://forum.openclonk.org/topic_show.pl?pid=25749#pid25749 for further information
Merge branch 'macscheduler'
add icon for maze
make the story of MineRescue more believable (so the "trapped" clonks can't climb, eh?)
Proofreading and adding missing (German) descriptions of scenarios
cmake: Only add StdSchedulerMac.mm when APPLE platform
convert mesh of spray can to binary format
add placeholder graphic for loom
+ the previous unfinished loom model export seems to be corrupt, there was a loading error
fix name and description of spray can
AcidGoldMine: Reduced amount of fire stone material and made sure it only occurs further down in the cave.

The transition from sulphur to fire stone made this scenario hellishly hard. Meteors would hit the fire stone material and cause a chain reaction that would flood the cave.

This can still happen, but at least you get some more time now.
include grenade launcher in one of the arenas (ruins)
more iron bombs!
replace FIXME logs on each scenario start with a FIXME comment in the code (#1013)
fix invalid landscape
MtBrame: use Objects.c
MtBrame: Fix object planes
update the descriptions for missions and world to hopefully make the distinction between the two more apparent