[gobject-introspection] Fix pep8.py and its invocation.

[Johan Dahlin <johan src gnome org>]

commit f941537d1c0a40f0906490ed160db6c79af572d3
Author: Chris Rivera <cmr litl com>
Date:   Wed May 20 19:29:33 2009 -0400

    Fix pep8.py and its invocation.
    
    pep8.py:input_file() normally returns the number of errors found in a
    given file, but it returns an empty dict if the file is excluded.  Change
    it to return 0 instead.
    
    config.py is auto-generated with a prefix that may be longer than
    80 characters.  Exclude config.py in the pep8.py check.  This fixes
    4042.
---
 Makefile.am  |    2 +-
 misc/pep8.py |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 2a4de03..4bb0e24 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -53,6 +53,6 @@ upload-release: $(distdir).tar.gz
 
 check-local:
 	@echo "  PEP-8 INQUISITION"
-	@find $(top_srcdir)/giscanner -name \*.py | sort | uniq | xargs $(PYTHON) $(top_srcdir)/misc/pep8.py --repeat
+	@find $(top_srcdir)/giscanner -name \*.py | sort | uniq | xargs $(PYTHON) $(top_srcdir)/misc/pep8.py --repeat --exclude=config.py
 	@echo "  CHECK Pyflakes"
 	@find $(top_srcdir)/giscanner -name \*.py | sort | uniq | xargs $(PYTHON) $(top_srcdir)/misc/pyflakes.py
diff --git a/misc/pep8.py b/misc/pep8.py
index 3b6248c..fef8a54 100644
--- a/misc/pep8.py
+++ b/misc/pep8.py
@@ -647,7 +647,7 @@ def input_file(filename):
     Run all checks on a Python source file.
     """
     if excluded(filename) or not filename_match(filename):
-        return {}
+        return 0
     if options.verbose:
         message('checking ' + filename)
     options.counters['files'] = options.counters.get('files', 0) + 1