hgweb: remove negative top from .info line in graph "top: -Xpx" shifts a block up by X pixels, which can be used to visually compress two lines of text to have less space between them, in this case it's used for the changesets on /graph page. But not only it's not needed there (both lines fit fine into their allowed vertical space), but it would also look better (not as crammed, more vertically centered) without these negative values. "position: relative" is needed solely for the "top" property to have effect on the element, no children of the .info element rely on it, so let's remove it as well.

unamend: drop unused vars, query after taking lock, use ctx.hex() for extras This is the followup of review on D821. Differential Revision: https://phab.mercurial-scm.org/D1579

test-lfs: drop a hack for ignoring convert devel-warnings This was fixed on stable in 281214150561.

py3: use bytes in place of basestring All strings in mercurial must be bytes so we can easily replace basestring with bytes. Differential Revision: https://phab.mercurial-scm.org/D1555

amend: make a copy of "extra" to avoid mutating an input I don't know of any problems this has caused, it just seems less surprising. Differential Revision: https://phab.mercurial-scm.org/D1575

tests: removes bashism from test-unamend.t FreeBSD builders fail because of bashism. Differential Revision: https://phab.mercurial-scm.org/D1578

run-tests: avoid calculating _testdir again Differential Revision: https://phab.mercurial-scm.org/D1574

run-tests: simplify by using dict.pop() with default Differential Revision: https://phab.mercurial-scm.org/D1573