Hi Daniel,

   Sorry for the long delay in reviewing this patch.

   Unfortunately I do not like the approach of converting the 
comment_chars and line_separator_chars arrays in *all* targets to 
non-constant versions.  GAS already has a solution for the comment_chars 
array - defining tc_comment_chars - and it is a relatively simply affair 
to extend this to handle line_separator_chars as well.

   Also your patch adds a new command line option -mccs, but it does not 
include any documentation of it in gas/doc/c-arm.texi or gas/NEWS.

   So... please have a look at the attached variant patch and let me 
know if this is acceptable to you.

Cheers
   Nick