Added rockspec for lua 5.2 support (revision 3)
Updating the old rockspecs files.
Removed revision 1 (broken).
Building based on makefile and rockspec only.
No more scripting crap.
Fix for seg fault giving nil as key or value (mkottman).
Fixed LUA typo.
switch case for lua_param_to_slice function
Merge branch 'master' of https://github.com/marcopompili/lua-leveldb
Merge branch 'sliceiofix'

Conflicts:
	src/lua-leveldb.cc
Removed lunitx tests for simple native tests.
Lunitx is a little buggy on 5.2
Cleaning comments and version
added types unit test
Added serializer cpp class.
Using serialization for storing data.
Moved serializer code from header to cpp file.
Iterator now using serialization, no need for explicit keynum/keystr or
valnum/valstr.
Updates to examples and unit tests.
Updated building scripts.