Add debugaddremove alias to addremove, so it doesn't show up in 'hg help'.

Add an explicit description of 'hg commit --addremove'.

mercurial/commands.py

@@ -2929,7 +2929,7 b' table = {'
          [('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
          _('hg add [OPTION]... [FILE]...')),
-    "addremove":
+    "debugaddremove|addremove":
         (addremove,
          [('I', 'include', [], _('include names matching the given patterns')),
           ('X', 'exclude', [], _('exclude names matching the given patterns'))],
@@ -2989,7 +2989,8 b' table = {'
          _('hg clone [OPTION]... SOURCE [DEST]')),
     "^commit|ci":
         (commit,
-         [('A', 'addremove', None, _('run addremove during commit')),
+         [('A', 'addremove', None,
+           _('mark new/missing files as added/removed before committing')),
           ('m', 'message', '', _('use <text> as commit message')),
           ('l', 'logfile', '', _('read the commit message from <file>')),
           ('d', 'date', '', _('record datecode as commit date')),

tests/test-help.out

@@ -39,7 +39,6 b' Mercurial Distributed SCM'
 list of commands (use "hg help -v" to show aliases and global options):
 
  add         add the specified files on the next commit
- addremove   add all new files, delete all missing files (DEPRECATED)
  annotate    show changeset information per file line
  archive     create unversioned archive of a repository revision
  backout     reverse effect of earlier changeset
@@ -82,7 +81,6 b' list of commands (use "hg help -v" to sh'
  verify      verify the integrity of the repository
  version     output version and copyright information
  add         add the specified files on the next commit
- addremove   add all new files, delete all missing files (DEPRECATED)
  annotate    show changeset information per file line
  archive     create unversioned archive of a repository revision
  backout     reverse effect of earlier changeset