Add Terra support.
Merge branch 'master' of git://github.com/Olivine-Labs/busted

Conflicts:
	src/core.lua
	src/moon.lua
make pcall loop dependent

fixes #171
use copcall only if _VERSION==Lua 5.1

This applies to luajit and Lua 5.1
removed old commented out code
Merge pull request #173 from lipp/fix-pcall-segfault

make pcall loop dependent
Merge branch 'master' of git://github.com/Olivine-Labs/busted

Conflicts:
	src/core.lua
Merge pull request #162 from Eloff/master

Remove unused function moon.loader, add some missing local declarations, add Terra support
Merge branch 'master' of git://github.com/Olivine-Labs/busted into refactor

Conflicts:
	src/core.lua

made pcall in the loop modules optional, if not set, it reverts to the global pcall