Don't read all the voice files on start, wait until they are needed.
Added 'W' code to _rules files to mean: further letters follow while spelling a word.
Lang=fr replace [r] with [R],  shorten [R] slightly


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@4 d46cf337-b52f-0410-862d-fd96e6ae7743