As agreed to by kahrl

This not only makes the vector functions faster, but also makes them more
consistent with other functions.

Add support for parameter 'visual_scale' for drawtypes 'signlike' and 'torchlike' like used for drawtype 'plantlike'

Instead of collecting all objects within a huge radius (which could be
a big value), just register each player that connects and give back the
current hold list.

Conflicts:
	src/script/lua_api/l_object.cpp

6b927229 Changed the default server step
from 0.05s to 0.1s