Rename files, delete old windows makefiles

plugins/lua/makefile.mak

@@ -1,20 +0,0 @@
-include "..\..\src\makeinc.mak"
-
-DIRENTLIB = ..\..\src\common\dirent-win32.lib
-
-all: lua.obj lua.def
-	link $(LDFLAGS) $(LIBS) /dll /out:xclua.dll $(LUALIB).lib $(DIRENTLIB) /def:lua.def lua.obj 
-
-lua.def:
-	echo EXPORTS > lua.def
-	echo xchat_plugin_init >> lua.def
-	echo xchat_plugin_deinit >> lua.def
-
-lua.obj: lua.c makefile.mak
-	cl $(CFLAGS) /I.. /Dsnprintf=g_snprintf lua.c
-
-clean:
-	del *.obj
-	del *.dll
-	del *.exp
-	del *.lib