[Perl/perl5] 4dc42b: Increase input buffer size in vms/munchconfig.c

[Craig A. Berry]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 4dc42bd5cef7cf68d9c7161d91338ff4a4173bc6
      
https://github.com/Perl/perl5/commit/4dc42bd5cef7cf68d9c7161d91338ff4a4173bc6
  Author: Craig A. Berry <craigbe...@mac.com>
  Date:   2023-10-20 (Fri, 20 Oct 2023)

  Changed paths:
    M vms/munchconfig.c

  Log Message:
  -----------
  Increase input buffer size in vms/munchconfig.c

This little utility program for using config.sh to do substitutions
on config_H.SH has been living with a 1K buffer, but the 'extensions'
line in config.sh is now closer to 2K long.  Oddly, this hasn't
caused trouble when built with DEC C, but clang dies.  So make a
bigger buffer, hopefully longer than any line we'll see in config.sh.