progress: use %d to format ints instead of %s
Due to behavioral changes between '% Ns' and '% Nd' this has some
unfortunate extra dancing. I'm not sure of a better way to solve this
problem.
Differential Revision: https://phab.mercurial-scm.org/D2226
#if no-windows no-osx
$ mkdir -p xdgconf/hg
$ echo '[ui]' > xdgconf/hg/hgrc
$ echo 'username = foobar' >> xdgconf/hg/hgrc
$ XDG_CONFIG_HOME="`pwd`/xdgconf" ; export XDG_CONFIG_HOME
$ unset HGRCPATH
$ hg config ui.username 2>/dev/null
foobar
#endif