[FTLS-104] Now handles multiple cvxx/ssxx features and selects correct existing strings for cvxx parameter values. Added warning when it can't find existing strings to re-use.
[FTLS-104] Now handles multiple cvxx/ssxx features and selects correct existing strings for cvxx parameter values. Added warning when it can't find existing strings to re-use.

git-svn-id: 98a9805b04c7ad1a3f3c712d42269270405357a5@1017 4dbf3599-f9e3-0310-9a96-835ab5cc0019

silnrsi/font-ttf-scripts