[1.48.02]
Don't speak single letters as Roman Numbers (this is a fix needed for lang=pt).


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@373 d46cf337-b52f-0410-862d-fd96e6ae7743
Merge branch 'upstream' into development
Merge branch 'development'