fixed builder position error when no energy, fix #1701
fixed potential NPE
improved movements of building items
engines are standalone blocks
tanks are standalone blocks
stairs are standalone blocks
Added provision for blueprints with non existing blocks and entities.
Close #1702
Fix a typ
No need to commit some Eclipse preferences
Merge pull request #1704 from tambry/typo

Fix a typo
Merge pull request #1705 from tambry/gitignoreeclipseprefs

Ignore some Eclipse preferences
Fixed pipe connection bans

Fixes #1707
removed obsolete properties
Merge branch '6.0.x' of github.com:BuildCraft/BuildCraft into 6.0.x
Merge branch '5.0.x' into 6.0.x

Conflicts:
	common/buildcraft/transport/PipeConnectionBans.java
fixed last java warnings
fixed version checking
Re-activated version check and changelog extracting, now based on github files.
Close #1709