Use clm.exe instead of clm on windows (untested)

testproperties.icl

@@ -23,6 +23,7 @@ import System.Environment
 import System.File
 import System.FilePath
 import System.Options
+import System.OS
 import System.Process
 import Text
 import Text.Language
@@ -248,7 +249,7 @@ handleModule opts fp w
 | not opts.compile = w
 # w = output INFO ("Compiling " +++ output_modname +++ "...") opts w
 # output_exename = opts.output_directory </> output_modname
-# (ok,w) = callProcess "clm"
+# (ok,w) = callProcess (IF_WINDOWS "clm.exe" "clm")
 	(opts.clm_args ++
 		interleave "-I" [opts.Options.directory:opts.includes] ++
 		interleave "-IL" opts.library_includes ++