* common.opt: Document --param.
* opts.c (columns, undocumented_msg): New.
(print_help): Get number of columns from environment. Print
--param help. Tweak newline handling.
(print_param_help): New.
(print_filtered_help): Better handling of duplicates. Complain
about undocumented switches.
(print_switch): New.
(wrap_help): Improve wrapping, use COLUMNS.
* opts.sh: Ignore comments in records.
* params.def: Fix typos and remove trailing periods.
* toplev.c (display_help): Don't dump --param help.
* doc/sourcebuild.texi: Update.
java:
* lang.opt: Don't show -MD_ and -MDD_.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@69581
138bc75d-0d04-0410-961f-
82ee72b054a4