sparse: use relglob to exclude readme files

Summary: Although the old glob *should* work, in practice the treemanifest matcher seems to have issues with glob:**/ paths, where relglob: works.

Reviewed By: ryanmce

Differential Revision: D7287992

fbshipit-source-id: d3802e730d937eeca7059dac691d8dac5a5de262

hgext/fbsparse.py

@@ -814,7 +814,7 @@ def _discover(ui, repo):
         matcher = matchmod.match(
             repo.root, repo.getcwd(),
             patterns=['path:' + profile_directory],
-            exclude=['**/README.*', '**/README'])
+            exclude=['relglob:README.*', 'relglob:README'])
         available.update(mf.matches(matcher))
 
     # sort profiles and read profile metadata as we iterate

tests/test-fb-hgext-sparse-profiles.t

@@ -376,6 +376,18 @@ Test profile discovery
    }
   ]
 
+The current working directory plays no role in listing profiles:
+
+  $ mkdir otherdir
+  $ cd otherdir
+  $ hg sparse --list-profiles
+  symbols: * = active profile, ~ = transitively included
+  ~ profiles/bar/eggs   - Base profile including the profiles directory
+    profiles/bar/python
+    profiles/foo/monty 
+  * profiles/foo/spam   - Profile that only includes another
+  $ cd ..
+
 Profiles are loaded from the manifest, so excluding a profile directory should
 not hamper listing.