parser: use %d instead of %s for interpolating error position Error position is an int, so we should use %d instead of %s. Fixes failures on Python 3.

manifest: unbreak pure-python manifest parsing on Python 3

context: use portable construction to verify int parsing

ui: portably bytestring-ify url object

scmutil: fix key generation to portably bytestringify integer

branchmap: stringify int in a portable way We actually need a bytes in Python 3, and thanks to our nasty source loader this will portably do the right thing.

branchmap: don't use buffer() on Python 3 This is certainly slower than the Python 2 code, but it works, and we can revisit it later if it's a problem.