run-tests: reap timed-out zombies

hgweb: run search instead of showing wrong error for ambigious identifier Before this when multiple changesets hashes in the repos started with the search query string, error was given that the revision isn't found, and it was misleading. Now a simple keyword search runs in this case.

doc: bump copyright year

version: bump copyright year

hgweb: add line wrapping switch to file diff and changeset views

hgweb: file diff and changesets views behave like file source view This gives all the benefits introduced before for file source view, namely code selection without line numbers and correct indents, highlighting line which is linked to, long lines wrapping. Implementation strategy is also the same as for file source view: all the lines are put in a sigle pre tag with span's for each line. Correct line numbering (same as before this patch) is achieved with nested CSS counters.

hgweb: introduce separate classes for stripey background Introduce stripes2 and stripes4 classes to support different structure. They will be useful to implement stripes with pure CSS everywhere instead of current server-side implementation.

hgweb: add line wrapping switch to file source view This uses classList property, which is well-supported now: both Chromium 8.0+, Firefox 3.6+ and Opera 11.5+ support it, as well as relatively modern versions of other browsers.

hgweb: add changelog and search templates to raw style This will make testing hgweb search and other things simpler and more concise, as there is no extra HTML code in the raw style.

hgweb: toggleDiffstat function instead of showDiffstat and hideDiffstat This eliminates the need of two almost equal functions, makes the code cleaner.