This reverts commit d08b8e43ca.

This commit causes gcc-4.8 to output a different SHA1 hash on the
language-phonemes test for `af` (the first language tested). It
does not break on clang or on gcc-7 so may be a compiler bug,
however the Travis CI build server is using it on Ubuntu Trusty
(14.04 LTS) and so may other older OSes.

This makes the codebase more consistent. Including speech.h is not necessary anymore in some files. Includes have been removed.

See issue #8, https://github.com/espeak-ng/espeak-ng/issues/8

There might still be some ints that could be changed to boolean.

Possible regressions in fifo.c:
int fifo_is_busy() and int fifo_is_command_enabled() used to return an int. Now they return a boolean. This might cause problems on systems where stdbool true/false is something else than 1/0.

Moved include/espeak/speak_lib.h to include/espeak-ng/speak_lib.h and
created a symlink from the original location.

This function call does not affect the audio output in non-async
modes. Audio output in that case is handled within the SynthOnTimer
helper function.

This commit has been reported to cause distortions in phoneme
pitches and speeds.

Also use size_t instead of int in some places
where it make sense

This allows newer versions of sonic to be used and to keep
up-to-date with bug fixes provided by the system.

This moves the libespeak source (*.cpp) files to src/libespeak-ng
and renames the C files (libespeak, espeak, speak) so they have
a .c file extension.

StdAfx.h is only needed for Microsoft Visual Studio C++ projects
that specify the "use pre-compiled headers" setting.

Command-line: added options --sep --tie.

API, changed the meaning of the "phonememode" parameter in espeak_SetPhonemeTrace() and espeak_TextToPhonemes().

Language changes to:  en, eu, pt.


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@385 d46cf337-b52f-0410-862d-fd96e6ae7743

Added language "ia" (Interlingua).
Language changes: en, it, pt, ta.


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@380 d46cf337-b52f-0410-862d-fd96e6ae7743