Replace the "dangerous" tmpnam() with mkstemp().
Reduce echo when announcing punctuation.
Treat echo amplitude=0 as no echo, even if an echo delay is set.
list voices: add --voices=mbrola
git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@158 d46cf337-b52f-0410-862d-fd96e6ae7743
jonsd