The eSpeak code uses `end_type` for the `voicingswitch` property
when used with consonants. It also allows `endtype` to be specified
in consonants if it is the same as `starttype`.

This code adds a check in the `starttype` and `endtype` handlers
to ensure that the phoneme type has been set to preserve the
eSpeak behaviour for these properties.

The 'dontlist' feature was used by the now removed PrintPhonemesUsed
function to not display that phoneme in the list. It was also only
used by the English phonemetable.

The 'fortis' feature is not used, so it has been removed.

This is a partial fix for an audio regression. The other part of
the fix requires a change in pcaudiolib to reopen the audio device
on flush requests for affected audio drivers/devices.