doc: unify help text for "--edit" option stable

doc: unify help text for "--edit" option

This patch changes help text for "--edit" option of commands below:

  - fetch
  - qnew
  - qrefresh
  - qfold
  - commit
  - tag

This unification reduces translation cost, too.

This patch chooses not "further edit commit message already specified"
(of "hg commit") but "invoke editor on commit messages" as unified
help text for "--edit" option, because the latter is much older than
the former.

--- a/hgext/fetch.py	Wed Jul 30 00:13:59 2014 +0900
+++ b/hgext/fetch.py	Wed Jul 30 00:14:52 2014 +0900
@@ -19,7 +19,7 @@
 @command('fetch',
     [('r', 'rev', [],
      _('a specific revision you would like to pull'), _('REV')),
-    ('e', 'edit', None, _('edit commit message')),
+    ('e', 'edit', None, _('invoke editor on commit messages')),
     ('', 'force-editor', None, _('edit commit message (DEPRECATED)')),
     ('', 'switch-parent', None, _('switch parents when merging')),
     ] + commands.commitopts + commands.commitopts2 + commands.remoteopts,

--- a/hgext/mq.py	Wed Jul 30 00:13:59 2014 +0900
+++ b/hgext/mq.py	Wed Jul 30 00:14:52 2014 +0900
@@ -2407,7 +2407,7 @@
         opts['date'] = "%d %d" % util.makedate()
 
 @command("^qnew",
-         [('e', 'edit', None, _('edit commit message')),
+         [('e', 'edit', None, _('invoke editor on commit messages')),
           ('f', 'force', None, _('import uncommitted changes (DEPRECATED)')),
           ('g', 'git', None, _('use git extended diff format')),
           ('U', 'currentuser', None, _('add "From: <current user>" to patch')),
@@ -2453,7 +2453,7 @@
     return 0
 
 @command("^qrefresh",
-         [('e', 'edit', None, _('edit commit message')),
+         [('e', 'edit', None, _('invoke editor on commit messages')),
           ('g', 'git', None, _('use git extended diff format')),
           ('s', 'short', None,
            _('refresh only files already in the patch and specified files')),
@@ -2523,7 +2523,7 @@
     return 0
 
 @command('qfold',
-         [('e', 'edit', None, _('edit patch header')),
+         [('e', 'edit', None, _('invoke editor on commit messages')),
           ('k', 'keep', None, _('keep folded patch files')),
          ] + commands.commitopts,
          _('hg qfold [-e] [-k] [-m TEXT] [-l FILE] PATCH...'))

--- a/mercurial/commands.py	Wed Jul 30 00:13:59 2014 +0900
+++ b/mercurial/commands.py	Wed Jul 30 00:14:52 2014 +0900
@@ -1339,8 +1339,7 @@
      _('mark a branch as closed, hiding it from the branch list')),
     ('', 'amend', None, _('amend the parent of the working dir')),
     ('s', 'secret', None, _('use the secret phase for committing')),
-    ('e', 'edit', None,
-     _('further edit commit message already specified')),
+    ('e', 'edit', None, _('invoke editor on commit messages')),
     ] + walkopts + commitopts + commitopts2 + subrepoopts,
     _('[OPTION]... [FILE]...'),
     inferrepo=True)
@@ -5695,7 +5694,7 @@
     ('r', 'rev', '', _('revision to tag'), _('REV')),
     ('', 'remove', None, _('remove a tag')),
     # -l/--local is already there, commitopts cannot be used
-    ('e', 'edit', None, _('edit commit message')),
+    ('e', 'edit', None, _('invoke editor on commit messages')),
     ('m', 'message', '', _('use text as commit message'), _('TEXT')),
     ] + commitopts2,
     _('[-f] [-l] [-m TEXT] [-d DATE] [-u USER] [-r REV] NAME...'))

--- a/tests/test-mq-qrefresh-interactive.t	Wed Jul 30 00:13:59 2014 +0900
+++ b/tests/test-mq-qrefresh-interactive.t	Wed Jul 30 00:14:52 2014 +0900
@@ -31,7 +31,7 @@
   
   options:
   
-   -e --edit                edit commit message
+   -e --edit                invoke editor on commit messages
    -g --git                 use git extended diff format
    -s --short               refresh only files already in the patch and
                             specified files
@@ -75,7 +75,7 @@
   
   options:
   
-   -e --edit                edit commit message
+   -e --edit                invoke editor on commit messages
    -g --git                 use git extended diff format
    -s --short               refresh only files already in the patch and
                             specified files

--- a/tests/test-qrecord.t	Wed Jul 30 00:13:59 2014 +0900
+++ b/tests/test-qrecord.t	Wed Jul 30 00:14:52 2014 +0900
@@ -62,7 +62,7 @@
                             list
       --amend               amend the parent of the working dir
    -s --secret              use the secret phase for committing
-   -e --edit                further edit commit message already specified
+   -e --edit                invoke editor on commit messages
    -I --include PATTERN [+] include names matching the given patterns
    -X --exclude PATTERN [+] exclude names matching the given patterns
    -m --message TEXT        use text as commit message
@@ -135,7 +135,7 @@
   
   options:
   
-   -e --edit                edit commit message
+   -e --edit                invoke editor on commit messages
    -g --git                 use git extended diff format
    -U --currentuser         add "From: <current user>" to patch
    -u --user USER           add "From: <USER>" to patch