cmdutil: extract increasing_windows() from walkchangerevs() It will be reused in the revset-based version.

httpclient: omit tests for the client since we don't run them anyway

httpclient: update to c5abd358e543 of httpplus

hgweb: make graph data suitable for template usage Previously, graph data has been encoded for processing done by JavaScript code run in the browser, employing simple structures with implicit member positions. This patch modifies the graph command to also produce data employing a dictionary-based structure suitable for use with the templating mechanism, thus permitting other ways of presenting repository graphs using that mechanism. In order to test these changes, the raw theme has been modified to include templates for graph nodes and edges. In a similar fashion, themes could employ technologies such as SVG that lend themselves to templating to produce the graph display. This patch makes use of a much simpler output representation than SVG in order to maintain clarity.

revset: fix infinite alias expansion detection The alias expansion code it changed from: 1- Get replacement tree 2- Substitute arguments in the replacement tree 3- Expand the replacement tree again into: 1- Get the replacement tree 2- Expand the replacement tree 3- Expand the arguments 4- Substitute the expanded arguments in the replacement tree and fixes cases like: [revsetalias] level1($1, $2) = $1 or $2 level2($1, $2) = level1($2, $1) $ hg log -r "level2(level1(1, 2), 3)" where the original version incorrectly aborted on infinite expansion error, because it was confusing the expanded aliases with their arguments.

revset: explicitely tag alias arguments for expansion The current revset alias expansion code works like: 1- Get the replacement tree 2- Substitute the variables in the replacement tree 3- Expand the replacement tree It makes it easy to substitute alias arguments because the placeholders are always replaced before the updated replacement tree is expanded again. Unfortunately, to fix other alias expansion issues, we need to reorder the sequence and delay the argument substitution. To solve this, a new "virtual" construct called _aliasarg() is introduced and injected when parsing the aliases definitions. Only _aliasarg() will be substituted in the argument expansion phase instead of all regular matching string. We also check user inputs do not contain unexpected _aliasarg() instances to avoid argument injections.

clone: add progress calls to uncompressed code path