[OpenSIPS-Devel] [OpenSIPS/opensips] b03cb4: Export is_username_char() to core and reuse it

[Liviu Chircu]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: b03cb41a3155623ba15bbde582e46f1f55864f70
      https://github.com/OpenSIPS/opensips/commit/b03cb41a3155623ba15bbde582e46f1f55864f70
  Author: Liviu Chircu <liviu at opensips.org>
  Date:   2021-01-14 (Thu, 14 Jan 2021)

  Changed paths:
    M modules/sipmsgops/sipmsgops.c
    M parser/parse_uri.h
    M parser/test/test_parser.c
    M strcommon.c

  Log Message:
  -----------
  Export is_username_char() to core and reuse it

Also remove the duplicate IS_ALPHANUM() module macro while at it.

Work in progress for #2367