hgweb: emit a valid, weak ETag
Previously, ETag headers from hgweb weren't correctly formed, because rfc2616
(section 14, header definitions) requires double quotes around the content of
the header. str(web.mtime) didn't do that.
Additionally, strong ETags signify that the resource representations are
byte-for-byte identical. That is, they can be reconstructed from byte ranges if
client so wishes. Considering ETags for all hgweb pages is just mtime of
00changelog.i and doesn't consider of e.g. .hg/hgrc with description, contact
and other fields, it's clearly shouldn't be strong. The W/ prefix marks it as
weak, which still allows caching the whole served file/page, but doesn't allow
byte-range requests.
syntax: glob
*.elc
*.tmp
*.orig
*.rej
*~
*.mergebackup
*.o
*.so
*.dll
*.exe
*.pyd
*.pyc
*.pyo
*$py.class
*.swp
*.prof
*.zip
\#*\#
.\#*
tests/.coverage*
tests/.testtimes*
tests/.hypothesis
tests/hypothesis-generated
tests/annotated
tests/*.err
tests/htmlcov
build
contrib/chg/chg
contrib/hgsh/hgsh
contrib/vagrant/.vagrant
contrib/docker/ubuntu-*
dist
packages
doc/common.txt
doc/*.[0-9]
doc/*.[0-9].txt
doc/*.[0-9].gendoc.txt
doc/*.[0-9].{x,ht}ml
MANIFEST
MANIFEST.in
patches
mercurial/__modulepolicy__.py
mercurial/__version__.py
mercurial/hgpythonlib.h
mercurial.egg-info
.DS_Store
tags
cscope.*
.idea/*
i18n/hg.pot
locale/*/LC_MESSAGES/hg.mo
hgext/__index__.py
# files installed with a local --pure build
mercurial/base85.py
mercurial/bdiff.py
mercurial/diffhelpers.py
mercurial/mpatch.py
mercurial/osutil.py
mercurial/parsers.py
syntax: regexp
^\.pc/
^\.(pydev)?project
# hackable windows distribution additions
^hg-python
^hg.py$