convert: move -A option to --authormap

hgext/convert/__init__.py

@@ -274,7 +274,7 b' commands.norepo += " convert debugsvnlog'
 cmdtable = {
     "convert":
         (convert,
-         [('A', 'authors', '',
+         [('', 'authors', '',
            _('username mapping filename (DEPRECATED, use --authormap instead)'),
            _('FILE')),
           ('s', 'source-type', '',
@@ -283,7 +283,7 b' cmdtable = {'
            _('destination repository type'), _('TYPE')),
           ('r', 'rev', '',
            _('import up to target revision REV'), _('REV')),
-          ('', 'authormap', '',
+          ('A', 'authormap', '',
            _('remap usernames using this file'), _('FILE')),
           ('', 'filemap', '',
            _('remap file names using contents of file'), _('FILE')),

tests/test-convert.out

@@ -239,7 +239,7 b' options:'
  -s --source-type TYPE  source repository type
  -d --dest-type TYPE    destination repository type
  -r --rev REV           import up to target revision REV
-    --authormap FILE    remap usernames using this file
+ -A --authormap FILE    remap usernames using this file
     --filemap FILE      remap file names using contents of file
     --splicemap FILE    splice synthesized history into place
     --branchmap FILE    change branch names while converting