Fixed issue2550572: setting nosy=+foo on multiple issues gives them all the same exact nosy list. Added a missing reinitialization that has to occur every time though the loop in do_set. Manually tested with: python roundup/scripts/roundup_admin.py -i demo set issue184,issue17 nosy=demo python roundup/scripts/roundup_admin.py -i demo set issue17 nosy=+alpha,+anonymous python roundup/scripts/roundup_admin.py -i demo set issue184 nosy=+beta,+anonymous python roundup/scripts/roundup_admin.py -i demo set issue184,issue17 nosy=-demo,-anonymous,+admin issue17 nosy was admin,alpha issue 184 nosy was admin,beta after tests.

recursive-include share *
recursive-include roundup *.*
recursive-include frontends *.*
recursive-include scripts *.* *-*
recursive-include tools *.*
recursive-include test *.py *.txt
recursive-include doc *.html *.png *.txt *.css *.example
recursive-include detectors *.py
global-exclude *.pyc *.pyo .DS_Store
include run_tests.py demo.py *.txt
include doc/conf.py
exclude 2to3-done.txt
exclude doc/security.txt
include locale/*.po locale/*.mo locale/roundup.pot