eSpeak: speech synthesis Code

[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.

[1.26.05] Fix count of upper-case letters in a word to consider multibyte characters.
Mbrola translations, option to not match across a word boundary.
Mbrola translations, allow check of lengthen indicator [:].
espeakedit, add operation to apply a voice's formants modifications to a keyframe.