tests/test-check-shbang.t

hg: don't attempt to extend `sys.path` with the user site without `APPDATA`

This variable is created by the system and *should* be available, but
test-lfs-bundle.t has a test where it is explicitly unset.  It wasn't caught
before because prior to 95af358fcdfe, it was limited to the py2exe binary.  As a
precaution, fix both that and the pyoxidizer case that was causing the test to
fail.

Differential Revision: https://phab.mercurial-scm.org/D11354

#require test-repo

  $ . "$TESTDIR/helpers-testrepo.sh"
  $ cd "`dirname "$TESTDIR"`"

look for python scripts that do not use /usr/bin/env

  $ testrepohg files 'set:grep(r"^#!.*?python") and not grep(r"^#!/usr/bi{1}n/env python") - **/*.t'
  [1]

In tests, enforce $PYTHON and *not* /usr/bin/env python or similar:
  $ testrepohg files 'set:grep(r"#!.*?python") and **/*.t' \
  > -X tests/test-check-execute.t \
  > -X tests/test-check-format.t \
  > -X tests/test-check-module-imports.t \
  > -X tests/test-check-pyflakes.t \
  > -X tests/test-check-shbang.t
  [1]

The above exclusions are because they're looking for files that
contain Python but don't end in .py - please avoid adding more.

look for shell scripts that do not use /bin/sh

  $ testrepohg files 'set:grep(r"^#!.*/bi{1}n/sh") and not grep(r"^#!/bi{1}n/sh")'
  [1]