@bartbes: 'Replace (C99/C++11) snprintf with lua_pushfstring'

https://bitbucket.org/rude/love/commits/fba8eb4af9c84510b0565df2d3813bc65d467354
Fixed luaopen_enet to indicate the correct number of return values
Merge pull request #9 from slime73/master

Fix compilation on compilers without full C99/C++11 support, fix Lua stack for require("enet")