fixed warning and error message
diff --git a/Lib/distutils/util.py b/Lib/distutils/util.py
index a87ef44..6bff44f 100644
--- a/Lib/distutils/util.py
+++ b/Lib/distutils/util.py
@@ -448,7 +448,7 @@
     """
     # nothing is done if sys.dont_write_bytecode is True
     if sys.dont_write_bytecode:
-        raise DistutilsByteCompileError('byte-compiling not supported.')
+        raise DistutilsByteCompileError('byte-compiling is disabled.')
 
     # First, if the caller didn't force us into direct or indirect mode,
     # figure out which mode we should be in.  We take a conservative