bump debian policy
lintian vcs-field-not-canonical

I: clippoly source: vcs-field-not-canonical git://git.debian.org/git/collab-maint/clippoly.git git://anonscm.debian.org/collab-maint/clippoly.git
I: clippoly source: vcs-field-not-canonical http://git.debian.org/?p=collab-maint/clippoly.git http://anonscm.debian.org/gitweb/?p=collab-maint/clippoly.git
log changes