tests/test-eol-tag.t

phabricator: fix a phabsend crash when processing a renamed binary

This was a trivial fix, and some more tests are added to cover binary files.
Since the old filecontext is passed in, the old name is still available.  But I
noticed some weirdness around what it marked as binary and not, and what is
viewable in Phabricator.  Those things have been flagged, and will probably take
some digging.

Differential Revision: https://phab.mercurial-scm.org/D8133

https://bz.mercurial-scm.org/2493

Testing tagging with the EOL extension

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > eol =
  > 
  > [eol]
  > native = CRLF
  > EOF

setup repository

  $ hg init repo
  $ cd repo
  $ cat > .hgeol <<EOF
  > [patterns]
  > ** = native
  > EOF
  $ printf "first\r\nsecond\r\nthird\r\n" > a.txt
  $ hg commit --addremove -m 'checkin'
  adding .hgeol
  adding a.txt

Tag:

  $ hg tag 1.0

Rewrite .hgtags file as it would look on a new checkout:

  $ hg update -q null
  $ hg update -q

Touch .hgtags file again:

  $ hg tag 2.0

  $ cd ..