hgweb: split some long lines in paper, gitweb and monoblue styles This will ease future patches for the templates. As a result of this patch, paper style has one visual change in log/shortlog/file log view: the spacing between commit message and the first tag (or branch name, or bookmark) is now roughly who spaces wide instead of one space wide. This spacing is consistent with the one between branch names/tags/bookmarks themselves, so it looks better. In gitweb style, the change from non-breakable space to regular space is consistent with other elements. In monoblue the change is not noticeable.

run-tests: add a --profile-runner option While in the throes of a recent run-tests adventure, I found it useful to have profiler output for the testrunner itself. Adding it was simple enough and seems worth keeping around.

test-http: drop compatibility check on Python >= 2.4.3 This is obsolete now that Python < 2.6 is no more supported. This is thus a backout of c499fff76440.

revset: remove unused 'only' from methods table The infix 'only' operator is mapped to 'only()' function by optimize(), so it won't be looked up as a method. The test shows it.