D6958: hg: move hg script to be a template that gets filled in via make

[mharbison72 (Matt Harbison)]

mharbison72 added inline comments.

INLINE COMMENTS

> Makefile:50
> +hg: hg.in.py
> +	$(PYTHON) -c "import sys; sys.stdout.write(sys.stdin.read().replace('%(interpreter)s', sys.executable))" < hg.in.py > hg
> +	chmod +x hg

Any sane way to get this to strip $(DESTDIR) from the lead?  (Or maybe just override it via another parameter.)  That would solve one of the issues with the custom Mac install builder (D6846 <https://phab.mercurial-scm.org/D6846>), but probably causes a problem running `contrib/genosxversion.py` (which wants to exec `hg`).

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D6958/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D6958

To: durin42, #hg-reviewers, indygreg
Cc: mharbison72, indygreg, mercurial-devel