- removed rtl:: prefix
- removed RTL_CONSTASCII_USTRINGPARAM
- corrected some misspells

Change-Id: I88bb0beec718a7fe38c61220aa61401419f23b42
Reviewed-on: https://gerrit.libreoffice.org/1291Reviewed-by: Luboš Luňák <l.lunak@suse.cz>
Tested-by: Luboš Luňák <l.lunak@suse.cz>