config: add a new [command-templates] section for templates defined by hg The existing `[templates]` section lets the user define their own keys and then refer to them on the command line with `-T`. There are many cases where hg wants to use a user-defined template with a given name, such as `ui.logtemplate` and `ui.mergemarkertemplate`. This patch starts moving such configs in a common section by moving `ui.logtemplate` to `command-templates.log` (with an alias from the old name, of course). Differential Revision: https://phab.mercurial-scm.org/D9245

--- a/tests/test-bookmarks-pushpull.t	Mon Oct 26 10:08:22 2020 -0700
+++ b/tests/test-bookmarks-pushpull.t	Fri Oct 23 10:56:18 2020 -0700
@@ -10,8 +10,8 @@
 #require serve
 
   $ cat << EOF >> $HGRCPATH
-  > [ui]
-  > logtemplate={rev}:{node|short} {desc|firstline}
+  > [command-templates]
+  > log={rev}:{node|short} {desc|firstline}
   > [phases]
   > publish=False
   > [experimental]