Fix #1358 (disappearing clouds)
Added show_debug to minetest.conf.example

I love that setting. Why is it not in this file already?
New feature: drop a item instead a stack while...

sneaking
Improve performance by removing some temporary objects
Fix some coding style issues
Merge commit '9675d9e' into merge3
Merge commit '763a511' into merge3

Conflicts:
	src/guiFormSpecMenu.cpp