Merge pull request #112 from pakozm/devel

Devel, new version incomming, v0.4.0
Changed binding to not STOP/RESTART garbage collector when pushing userdata
Solved problem in matrix.ext.iterate
Improvied table serialization to serialize array part and non array part in a different way
Enhanced paralel_foreach implementation
Updated parallel for each, added util.pack and util.unpack which allow to pack one value into itself, and to unpack one value into itself
Merge branch 'devel' into lua-5.3