Remove mysterious '-# Defining these options here in addition to common.opt is necess...

Remove mysterious '-# Defining these options here in addition to common.opt is necessary' command-line option

Before:

    $ [...]/gcc '-# Defining these options here in addition to common.opt is necessary' -S -x c /dev/null && echo MYSTERIOUS
    MYSTERIOUS

After:

    $ [...]/gcc '-# Defining these options here in addition to common.opt is necessary' -S -x c /dev/null && echo MYSTERIOUS
    gcc: error: unrecognized command-line option ‘-# Defining these options here in addition to common.opt is necessary’

This commit changes:

    --- [...]/build-gcc/gcc/optionlist	2022-03-24 22:12:07.936746648 +0100
    +++ [...]/build-gcc/gcc/optionlist	2022-03-24 22:30:06.976737341 +0100
    @@ -1,4 +1,3 @@
    -# Defining these options here in addition to common.opt is necessary\1c# in order for the default -Wall setting of -Wuse-after-free=2 to take\1c# effect.
     ###\1cDriver
     -all-warnings\1cAda AdaWhy AdaSCIL Alias(Wall)
     -all-warnings\1cC ObjC C++ ObjC++ Warning Alias(Wall)
    [...]

    --- [...]/build-gcc/gcc/options.cc	2022-03-24 22:12:09.548727738 +0100
    +++ [...]/build-gcc/gcc/options.cc	2022-03-24 22:30:08.904727249 +0100
    @@ -3222,15 +3222,6 @@
     const struct cl_option cl_options[] =
     {
      /* [0] = */ {
    -    "-# Defining these options here in addition to common.opt is necessary",
    -    "# effect.",
    -    NULL,
    -    NULL,
    -    NULL, NULL, N_OPTS, N_OPTS, 68, /* .neg_idx = */ -1,
    -    0,
    -    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
    -    (unsigned short) -1, 0, CLVC_INTEGER, 0, -1, -1 },
    - /* [1] = */ {
         "-###",
         NULL,
         NULL,
    [...]

..., and re-numbers all following options.

    --- [...]/build-gcc/gcc/options.h	2022-03-21 23:24:25.894226828 +0100
    +++ [...]/build-gcc/gcc/options.h	2022-03-24 22:30:07.288735708 +0100
    @@ -9753,2118 +9753,2117 @@

     enum opt_code
     {
    -  OPT___Defining_these_options_here_in_addition_to_common_opt_is_necessary = 0,/* -# Defining these options here in addition to common.opt is necessary */
    [...]

..., and likewise re-numbers all following options.

Clean-up for commit 671a283636de75f7ed638ee6b01ed2d44361b8b6
"Add -Wuse-after-free [PR80532]".

	gcc/c-family/
	* c.opt: Properly quote comment.