Added tests for comments extraction
Added tests for comments extraction

adan830/luacheck,mpeterv/luacheck,xpol/luacheck,linuxmaniac/luacheck,xpol/luacheck,kidaa/luacheck,mpeterv/luacheck,tst2005/luacheck,xpol/luacheck,mpeterv/luacheck,linuxmaniac/luacheck,kidaa/luacheck,tst2005/luacheck,adan830/luacheck