Fixed up path limitation issue with p4.

p4Helper.py

@@ -57,6 +57,21 @@ def join( patha, pathb ):
 def splitdrive( path ):
     return ntpath.splitdrive( path )
 
+def p4FriendlyPath(path):
+    """
+    Returns path with sanitized unsupported characters due to filename limitations.
+    """
+    # http://www.perforce.com/perforce/doc.current/manuals/cmdref/filespecs.html#1041962
+    replace_items = {
+        '@' : '%40',
+        '#' : '%23',
+        '*' : '%2A',
+        '%' : '%25'
+    }
+    def replace(c):
+        return replace_items[c] if c in replace_items else c
+    return ''.join(map(replace, path))
+
 #==============================================================
 def get_ignore_list( path, files_to_ignore ):
     # have to split path and test top directory