pidgin/purple-plugin-pack

plugin_pack.py: another python3 compat fix in show_usage

2017-04-06, dx
18e221cca584
plugin_pack.py: another python3 compat fix in show_usage

More specifically, fixing something that was broken in a previous python3
compat attempt by someone else.
#
# Makefile.mingw
#
# Description: Makefile for sepandtab plugin.
#
PP_TOP := ..
PP = sepandtab
include $(PP_TOP)/win_pp.mak