* update in-tree espeak to espeak-1.48.04

Update the C-ified version of espeak to espeak-1.48.04.
Currently builds and links for Sailfish. Untested for
Windows builds yet.
Throws a lot of warnings still.

* Make private functions static in espeak.

Convert the obviously private functions to static in order to fix
warnings. There are a lot not so obvious left that are used in other
files by extern statement. Silly.

* correctly assign exported methods to headers

This asigns exported functions to headers avoiding missing prototypes
warning.

* move vars out of for loop as Sailfish disallows c99

Standard build under Sailfosh disallows c99 features. Therefore move
variables out of for loop declaration.

* espeak prepare for Windows build

* fix:speech:espeak Adapt to newer espeak version 1.48.04

* redo. removing the files from build was the false way

* Disable mbrola support as this fails on windows

* remove uneccesary posix calls on windows