They are unnecessary. I did leave them in localrepo.py where there is
something like:
_junk = foo()
_junk = None
to free memory early. I don't know if just `foo()` will free the return
value as early.
This should be faster and more future-proof. Calls where the result is to be
sorted using util.sort() have been left unchanged. Calls to .items() on
configparser objects have been left as-is, too.
This is needed to keep the code in keepalive.py from sharing
the same connection between HTTP and HTTPS.
cd1a6ad30c82 explains why we were using a single handler.
This should fix issue892.
The problem was with python > 2.3 which stores part of the
headers in unredirected_hdrs.
Furthermore, we simplify the code to use httplib directly.
fix issue473
uses keepalive module from urlgrabber package. tested against "hg serve",
cgi server, and through http proxy. used ethereal to verify that only
one tcp connection used during entire "hg pull" sequence.
if server supports keepalive, this makes latency of "hg pull" much lower.
