Support Lua5.2

[oeway]

We received users using lua5.2 instead of luajit with torch, and that will cause errors as #31 and #30 etc.

[oeway]

I tried to do fresh installation with lua5.2 but still have problem with lutorpy:

ctypes.CDLL(os.path.join( "/home/wei/torch/install/lib/liblua.so"), mode=ctypes.RTLD_GLOBAL)
ctypes.CDLL(os.path.join( "/home/wei/torch/install/lib/libluaT.so"), mode=ctypes.RTLD_GLOBAL)
ctypes.CDLL(os.path.join( "/home/wei/torch/install/lib/libTH.so"), mode=ctypes.RTLD_GLOBAL)

Then I got the following error:

In [27]: import lutorpy
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-27-db94a7dcb3df> in <module>()
----> 1 import lutorpy

/usr/local/lib/python2.7/dist-packages/lutorpy-1.3.7-py2.7-linux-x86_64.egg/lutorpy/__init__.py in <module>()
     42 # the following is all that should stay in the namespace:
     43 
---> 44 from lutorpy._lupa import *
     45 
     46 try:

ImportError: /usr/local/lib/python2.7/dist-packages/lutorpy-1.3.7-py2.7-linux-x86_64.egg/lutorpy/_lupa.so: undefined symbol: luaL_openlib
``

[sagarwaghmare69]

Hi,
Any possibility of supporting Lua5.2 ? I am using Lua5.2 to bypass limit on table size from luajit.
Kind regards