Bugfix Update [SEE DESC}

Added stained clay, coal block, and hardened clay Block IDs
Added stained clay and carpet block Metas
Fixed bug with sticky retract bailing out but not unsetting arm
Fixed autocomplete not working when not at the first character, fixes
#64
Added furnace recipes for hardened clay and coal and coal blocks
Merge remote-tracking branch 'upstream/master'
Enhancements to Tabcompletion and Compile Fix

Tab complete now finds the last word and matches accordingly, with a 20%
increase in speed!
Fixed missing comma breaking compilation
Properly fixed piston non-animation

Fixes #57
Added checks to bail out if block entities are being pushed by a piston
Merge branch 'master' of https://github.com/tigerw/MCServer into tigerw-master

Conflicts:
	source/Piston.cpp

Merged pull request and fixed merge conflicts