localrepo: make _applyrequirements more specific
Localrepo's _applyrequirements function isn't very straightforward about what
it does. Its purpose is to both act as a setter for the requirements attribute,
and to apply appropriate requirements to the opener's configuration.
This change makes the function just focus on the latter responsibility. We
rename it as such, and make setting the requirements attribute the
responsibility of the caller.
#require execbit
$ hg init repo
$ cd repo
$ echo foo > foo
$ chmod 644 foo
$ hg ci -qAm '644'
$ chmod 755 foo
$ hg ci -qAm '755'
reverting to rev 0
$ hg revert -a -r 0
reverting foo
$ hg st
M foo
$ hg diff --git
diff --git a/foo b/foo
old mode 100755
new mode 100644
$ cd ..