The commit didn't work because the blocks weren't loaded yet.

This reverts commit 22dbbf0a.

Conflicts:
	minetest.conf.example

Add lag reporting to masterserver (average dtime)
StyledWriter  -> FastWriter in masterserver announce

because cmake is unable to parse it's own lists properly

This can solve numerous problems such as:
http://www.cmake.org/Bug/view.php?id=13959
http://www.cmake.org/Bug/view.php?id=14601

If pkg-config or freetype2.pc is not found, then fall back to the
FindFreetype.cmake module logic.

Restrict to UNIX since I only tested it here.

Lua does not guarantee that the indexes of a table will be in numerical order.

This doubles performance on some window managers (WTF?!)

Indexes for empty slots shall not be skipped.