Fix a small corner of log behaviour.

Fix a small corner of log behaviour.
If invoked with no arguments in a subdirectory of the repo root, it
should print the history of the repository as a whole.

--- a/mercurial/commands.py	Wed Aug 24 13:31:46 2005 -0700
+++ b/mercurial/commands.py	Wed Aug 24 14:45:35 2005 -0700
@@ -845,7 +845,12 @@
     # performance, so we use iterators that walk forwards through
     # windows of revisions, yielding revisions in reverse order, while
     # walking the windows backwards.
-    files, matchfn, anypats = matchpats(repo, repo.getcwd(), pats, opts)
+    cwd = repo.getcwd()
+    if not pats and cwd:
+        opts['include'] = [os.path.join(cwd, i) for i in opts['include']]
+        opts['exclude'] = [os.path.join(cwd, x) for x in opts['exclude']]
+    files, matchfn, anypats = matchpats(repo, (pats and cwd) or '',
+                                        pats, opts)
     revs = map(int, revrange(ui, repo, opts['rev'] or ['tip:0']))
     wanted = {}
     slowpath = anypats