[PUSHED] Replace more characters functions with rtl/character.hxx

[Michael Stahl (via Code Review)]

Hi,

Thank you for your patch!  It has been merged to LibreOffice.

If you are interested in details, please visit

    https://gerrit.libreoffice.org/4447

Approvals:
  LibreOffice gerrit bot: Verified
  Michael Stahl: Looks good to me, approved


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Gerrit-MessageType: merged
Gerrit-Change-Id: I70f3c31e4b2f44d2b30020a588aaa53d3b63d452
Gerrit-PatchSet: 2
Gerrit-Project: core
Gerrit-Branch: master
Gerrit-Owner: Arnaud Versini <arnaud.versini at gmail.com>
Gerrit-Reviewer: LibreOffice gerrit bot <gerrit at libreoffice.org>
Gerrit-Reviewer: Michael Stahl <mstahl at redhat.com>