[PATCH] util: improve doc for checkcase

[Mads Kiilerich]

# HG changeset patch
# User Mads Kiilerich <mads at kiilerich.com>
# Date 1360539792 -3600
#      Mon Feb 11 00:43:12 2013 +0100
# Node ID 2019611e6858ce9b297da4fe7631bc7b7b00c777
# Parent  e34e55c1738d828cd8406b234beae3ab8469ec16
util: improve doc for checkcase

diff --git a/mercurial/util.py b/mercurial/util.py
--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -637,7 +637,7 @@
 
 def checkcase(path):
     """
-    Check whether the given path is on a case-sensitive filesystem
+    Return true if the given path is on a case-sensitive filesystem
 
     Requires a path (like /foo/.hg) ending with a foldable final
     directory component.