tests: move generaldelta test to inline python (issue4064)

help: minor tweak to push help

pager: honour internal aliases If paging is configured for a command all it's internal defined aliases will be paged as well. This will make attend=log cause 'hg history' to run the pager. However custom aliases will not be paged by default.

Added signature for changeset 1596f2d8f242

Added tag 2.8-rc for changeset 1596f2d8f242

merge default into stable for 2.8 freeze

discovery: revise hint message introduced by changeset b00ba31313c3 This patch revises hint message from "for detail about" introduced by changeset b00ba31313c3 to "for details about", to unify it with the hint message introduced by proceeding patch.

push: add more detailed explanation about "--force" to online help document This patch adds more detailed explanation about "--force" to online help document of "hg push" to prevent novice users to execute "push --force" easily without understanding about problems of multiple branch heads in the repository.

push: hide description about "-f" in the hint to prevent from using it easily "use push -f to force" in the hint at abortion of "hg push" may cause novice users to execute "push -f" easily without understanding about problems of multiple branch heads in the repository. This patch hides description about "-f" in the hint, and leads into seeing "hg help push" for details about pushing new heads.

demandimport: allow extensions to import own modules by absolute name Before this patch, python modules of each extensions can't import another one in own extension by absolute name, because root modules of each extensions are loaded with "hgext_" prefix. For example, "import extroot.bar" in "extroot/foo.py" of "extroot" extension fails, even though "import bar" in it succeeds. Installing extensions into site-packages of python library path can avoid this problem, but this solution is not reasonable in some cases: using binary package of Mercurial on Windows, for example. This patch retries to import with "hgext_" prefix after ImportError, if the module in the extension may try to import another one in own extension. This patch doesn't change some "_import()"/"_origimport()" invocations below, because ordinary extensions shouldn't cause such invocations. - invocation of "_import()" when root module imports sub-module by absolute path without "fromlist" for example, "import a.b" in "a.__init__.py". extensions are loaded with "hgext_" prefix, and this causes execution of another (= fixed by this patch) code path. - invocation of "_origimport()" when "level != -1" with "fromlist" for example, importing after "from __future__ import absolute_import" (level == 0), or "from . import b" or "from .a import b" (0 < level), for portability between python versions and environments, extensions shouldn't cause "level != -1".