eSpeak: speech synthesis Code

[1.47.14]
Language changes:
an, en, es, fa, gu, it, pt, ta, te.

Voice files: added attribute 'dictdialect', eg:
dictdialect en-us
uses the US English voice to speak words or rules which are marked with _^_EN

[1.46.26]
espeakedit: Change from wxMDI to wxNotebook for prosody and vowel pages.
espeakedit: (linux) change to wxWidgets 2.8.

Add some missing files to phsource.
Remove executable attribute from program source files.

[1.43.31]
*_list files: added attribute $sentence.
*_rules files: added attributes $w_alt, $p_alt.
phoneme definitions: added attribute no_pause.

-X command-line option: Show the matching of multiple-word entries in *_list files.

espeakedit: Add menu option to compile the intonation data file (the data is not yet used).

Start language: Bulgarian.

lang=bg (Bulgarian): Add feature in espeakedit to make bg_listx from a lexicon of words which have stress position mark-up.

espeakedit: Change the frame-length field from Spin Control to Text Control to allow better access from screen-readers.

Language options: add an option to the Regressive Voicing option to de-voice the final consonant of words.

Don't speak "dot" if an ellipsis is followed by a dot.

Intonation: change the internal pitch unit to give finer control, and align with the values displayed in the espeakedit Prosody window.

Fixes for Klatt synthesizer

[1.40.21]
Fix: -g command option not working on Windows.
Fix: Text position value in events was limited to 16 bits.

[1.40.15]
espeakedit: Change formant dialog to include Klatt parameters.
espeakedit: Change the format of formant data to include Klatt parameters.
espeakedit: Fix the frequency of F7,F8 at 7800Hz,9000Hz.

[1.39.39]
Windows SAPI5 installer: Remove the limit on the number of voices specified for inclusion in the Windows Registry.

voices.cpp: Widen formant peaks F3 F4 F5.

Reduce slightly the difference in amplitude between stressed and unstressed vowels.

[1.39.28]
Added experimental Klatt synthesizer.
Klatt phonemes use a new format of phoneme data.
espeakedit, new dialog fields and layout for Klatt phonemes.
Added Klatt versions of English phonemes.

Fixed some compilation warnings on Windows.
Fixed bug in Lettergroups > L10

Increased amplitude of harmonics below F1 peak, to increase bass.
Allow 5 (up from 4) pairs of values in "tone" command in voice files.
Default to slightly wider pk_shape1.

If words are separated by hyphens, don't add word-gap, and don't pass new-word flag onto phoneme processing.

[1.31.07]
intonation: changed comma intonation for intonation type 2.
intonation: adjusted exclamation (make the nuclear syllable emphasized).
intonation: split intonation table into body and nucleus parts.
lang-zh: only length tones 2,3 at end of sentence.

[1.27] Only keep one primary stress when adding prefixes.
Add stress_rule=4, altepenultimate stress.
Change license to GPL version 3.