basefilectx: move _repopath from filectx

mercurial/context.py

@@ -443,6 +443,10 b' class basefilectx(object):'
     def _filerev(self):
         return self._filelog.rev(self._filenode)
 
+    @propertycache
+    def _repopath(self):
+        return self._path
+
 class filectx(basefilectx):
     """A filecontext object makes access to data related to a particular
        filerevision convenient."""
@@ -492,10 +496,6 b' class filectx(basefilectx):'
             # considered when solving linkrev issue are on the table.
             return changectx(self._repo.unfiltered(), self._changeid)
 
-    @propertycache
-    def _repopath(self):
-        return self._path
-
     def __nonzero__(self):
         try:
             self._filenode