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pycompat: export queue module instead of symbols in module (API)...

pycompat: export queue module instead of symbols in module (API) Previously, pycompat and util re-exported individual symbols from the queue module. This had the side-effect of forcing the loading of the queue module whenever pycompat/util was imported. These symbols aren't used very often. So importing the module to get a handle on the symbols is wasteful. This commit changes pycompat so it no longer exports the individual symbols in the queue module. Instead, we make the imported module a "public" symbol. We drop the individual symbol aliases from the util module. All consumers are updated to use pycompat.queue.* instead. This change makes 300 invocations of `hg log -r. -T '{rev}\n'` a little faster: before: 18.44s after: 17.87s Differential Revision: https://phab.mercurial-scm.org/D3441

Matt Mackall - - Load All Authors

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      #require execbit

        $ hg init repo

        $ cd repo

        $ echo foo > foo

        $ chmod 644 foo

        $ hg ci -qAm '644'

        $ chmod 755 foo

        $ hg ci -qAm '755'

      reverting to rev 0

        $ hg revert -a -r 0

        reverting foo

        $ hg st

        M foo

        $ hg diff --git

        diff --git a/foo b/foo

        old mode 100755

        new mode 100644

        $ cd ..

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				#require execbit

				$ hg init repo
				$ cd repo
				$ echo foo > foo
				$ chmod 644 foo
				$ hg ci -qAm '644'

				$ chmod 755 foo
				$ hg ci -qAm '755'

				reverting to rev 0

				$ hg revert -a -r 0
				reverting foo
				$ hg st
				M foo
				$ hg diff --git
				diff --git a/foo b/foo
				old mode 100755
				new mode 100644

				$ cd ..