add minimum methods for matcher By changeset 24820:5693c834bcb4 in mercurial crew, it become that matcher object need to implement some common methods, bad(), always(), iseact() and anypats(). So the PrefixMatch class should be implement them.

include Makefile hgsubversion/help/*.rst tests/fixtures/invalid_utf8.tar.gz
recursive-include tests *.py *.sh *.svndump *.txt