largefiles: shortcircuit status code also for non-matching patterns

We currently shortcircuit the checking for large file standins if only
patterns of type 'path' are given on the command line. That makes e.g.
"hg st 'glob:foo/**'" unnecessarily slow when the only large files are
in a sibling directory.

Relax the check to be that it is not an always-matcher and that no
large files match the patterns given on the command line.

Note that before this change, only the latter of the following two
would show the status of files in .hglf (since the -I makes
match.anypats() true). After this change, they both display the
status. This behavior doesn't seem correct, but it would be a separate
change to explicitly filter out .hglf even in the shortcircuit case.

  hg st .hglf/$file
  hg st .hglf/$file -I .

hgext/largefiles/reposetup.py

@@ -102,12 +102,12 b' def reposetup(ui, repo):'
                 except error.LockError:
                     pass
 
-                # First check if there were files specified on the
-                # command line.  If there were, and none of them were
+                # First check if paths or patterns were specified on the
+                # command line.  If there were, and they don't match any
                 # largefiles, we should just bail here and let super
                 # handle it -- thus gaining a big performance boost.
                 lfdirstate = lfutil.openlfdirstate(ui, self)
-                if match.files() and not match.anypats():
+                if not match.always():
                     for f in lfdirstate:
                         if match(f):
                             break