espeakedit: Prosody window now shows the FMT() or WAV() filename
and the standard length of the selected phoneme.

Added the ability to produce speech at different sample rates.
To use rates other than the default 22050Hz, the phoneme data must
be recompiled.  This needs the "sox" program to be available.
(sox.sourceforge.net).

espeakedit: Added menu option to compile the phoneme data at a
specified sample rate (rather than the default 22050Hz).

phondata: Includes the value of the sample rate at which the data was compiled.

Language changes: pt.



git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@302 d46cf337-b52f-0410-862d-fd96e6ae7743