Fix error in big-endian data conversion program, producing bad data.

Make geminated voiced stops (eg. [bb] ) longer at fast speeds.

Provide conditional compilation of the mbrola interface, define macro INCLUDE_MBROLA in speech.h

Mbrola: also look for mbrola voices in /usr/share/mbrola/voices

Pad TUNES and frame_t structures to a multiple of 4 bytes.

lang=da, Don't weaken unvoiced stops before pause.
lang=el, Remove final unstressed [a] if the next word starts with [a].
lang=pt, Change final [U] to [w] if next word starts with a vowel.


espeak 1.44.03

Fixes:
Lang=el, mk.  Was speaking words as individual letters.
Lang=pl.  Fix prounciation of 'ć' and 'ci'.
Fix crash in big-endian data conversion program.
Fix problem where changing voices reduces the speaking rate, at fast rates.

speak_lib.h:  add macro definitions for minimum, maximum, and normal speaking rate values.


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@253 d46cf337-b52f-0410-862d-fd96e6ae7743