tests: pass only one file at a time to tail(1)
It looks like the verison on Solaris only tails one file at a time.
https://bz.mercurial-scm.org/1089 $ hg init $ mkdir a $ echo a > a/b $ hg ci -Am m adding a/b $ hg rm a removing a/b (glob) $ hg ci -m m a $ mkdir a b $ echo a > a/b $ hg ci -Am m adding a/b $ hg rm a removing a/b (glob) $ cd bRelative delete: $ hg ci -m m ../a $ cd ..