Move deletion of Lua files in Windows Installer
Preserves Lua directories in the x86 and x64 folder so that extra
lua files can be included in the installer. In particular this is
for lua-socket.
Spelling mistake

Very minor correction.
Merge pull request #83 from MarkL1961/spelling-mistake

Spelling mistake
Merge pull request #61 from TheCycoONE/win32nsi-lua

Move deletion of Lua files in Windows Installer