Added unpack_returned_tuples flag to LuaRuntime.
Merge pull request #17 from bmoe/unpack_python_tuples

Added unpack_returned_tuples flag to LuaRuntime.
add install comment on ARCHFLAGS variable under MacOS-X

--HG--
extra : rebase_source : b7c7100e2fcb027910dab0b42732155e8bb34f3d
update tested LuaJIT version
remove some wrapper classes from the module API and declare some classes/methods final

--HG--
extra : amend_source : 805a574362bf07dea656a4f8a1f2ff5fe0fe1c1e
improve dealloc safety of _LuaObject by declaring it as "no_gc_clear" (requires Cython 0.20)
fix test name duplication in tests
add missing name to module "__all__" list
add doc section on "unpack_returned_tuples" flag
prepare release of 0.21
undo release date fixing
replace explict incref/decref with @cython.no_gc_clear decorator

--HG--
extra : amend_source : 7f827e76d5cd72ec24448518e7465313426c4323
Add attribute_handlers option to LuaRuntime

Rather than having the Lua runtime always take care of getting/setting
Python object attributes, optionally allow Python hooks to handle that.