cext: mark constant variables

cext: move util.h to cext tree Since util.h isn't useful in plain C module, it should be placed in CPython extension directory.

cext: move back finalization of dirstateTupleType where it should be

dispatch: setup color before pager for correct console information on windows Before this patch, "hg CMD --pager on" on Windows shows output unintentionally decorated with ANSI color escape sequences, if color mode is "auto". This issue occurs in steps below. 1. dispatch() invokes ui.pager() at detection of "--pager on" 2. stdout of hg process is redirected into stdin of pager process 3. "ui.formatted" = True, because isatty(stdout) is so before (2) 4. color module is loaded for colorization 5. color.w32effects = None, because GetConsoleScreenBufferInfo() fails on stdout redirected at (2) 6. "ansi" color mode is chosen, because of "not w32effects" 7. output is colorized in "ansi" mode because of "ui.formatted" = True Even if "ansi" color mode is chosen, ordinarily redirected stdout makes ui.formatted() return False, and colorization is avoided. But in this issue case, "ui.formatted" = True at (3) forces output to be colorized. For correct console information on win32, it is needed to ensure that color module is loaded before redirection of stdout for pagination. BTW, if any of enabled extensions has "colortable" attribute, this issue is avoided even before this patch, because color module is imported as a part of loading such extension, and extension loading occurs before setting up pager. For example, mq and keyword have "colortable".

cleanup: reuse existing wctx variables instead of calling repo[None] Incidentally, this apparently means we load .hgsub one time less as well, which affects a test case.

localrepo: extract bookmarkheads method to bookmarks.py This method is only used internally by destutil, and it's obscure enough I'm willing to just move it without a deprecation warning, especially since the new method has more constrained functionality. Design-wise I'd also like to get active bookmark handling folded into the bookmark store, so that we don't squirrel away an extra attribute for the active bookmark on the repository object.

tests: avoid renamed files triggering check-commit failures I had to flag some revisions to not undergo check-commit scrutiny today to get the tests to pass, because they renamed files that had existing failures which we're not cleaning up. Let's prevent that in the future by using the extended git diff format to elide moved code.

dispatch: make request accept additional reposetups chg needs special logic around repo object creation (like, collecting and reporting repo path to the master server). Adding "reposetup" to dispatch.request seems to be an easy and reasonably clean way to allow that.

cext: extract revlog/index parsing code to own C file parsers.c is ~3000 lines and ~2/3 of it is related to the revlog index type. We already have separate C source files for directory utilities and manifest parsing. I think the quite unwieldy revlog/index parsing code should be self-contained as well. I performed the extraction as a file copy then removed content from both sides in order to preserve file history and blame. As part of this, I also had to move the hexdigit table and function to a shared header since it is used by both parsers.c and revlog.c # no-check-commit

debugcommands: use temporary dict for its command table Instead, load the table by commands.py so the debug commands should always be populated. The table in debugcommands.py is unnamed so extension authors wouldn't be confused to wrap debugcommands.table in place of commands.table.