9867 pbchk exception_lists only work from top srcdir

*** 196,219 ****
  
      def ret(select=None):
          if not select:
              select = lambda x: True
  
!         for f in git_file_list(parent, paths):
!             f = relpath(f, '.')
              try:
!                 res = git("diff %s HEAD %s" % (parent, f))
              except GitError, e:
!                 # This ignores all the errors that can be thrown. Usually, this means
!                 # that git returned non-zero because the file doesn't exist, but it
!                 # could also fail if git can't create a new file or it can't be
!                 # executed.  Such errors are 1) unlikely, and 2) will be caught by other
!                 # invocations of git().
                  continue
              empty = not res.readline()
!             if (os.path.isfile(f) and not empty and select(f) and not exclude(f)):
!                 yield f
      return ret
  
  
  def comchk(root, parent, flist, output):
      output.write("Comments:\n")
--- 196,220 ----
  
      def ret(select=None):
          if not select:
              select = lambda x: True
  
!         for abspath in git_file_list(parent, paths):
!             path = relpath(abspath, '.')
              try:
!                 res = git("diff %s HEAD %s" % (parent, path))
              except GitError, e:
!                 # This ignores all the errors that can be thrown. Usually, this
!                 # means that git returned non-zero because the file doesn't
!                 # exist, but it could also fail if git can't create a new file
!                 # or it can't be executed.  Such errors are 1) unlikely, and 2)
!                 # will be caught by other invocations of git().
                  continue
              empty = not res.readline()
!             if (os.path.isfile(path) and not empty and
!                 select(path) and not exclude(abspath)):
!                 yield path
      return ret
  
  
  def comchk(root, parent, flist, output):
      output.write("Comments:\n")