The original variant list UI resulted in a long, complex list that
was difficult to navigate. This change splits up that list into
more manageable groups.

Conflicts:
	README.md

The i phoneme is used for the reduced i sound in e.g. happy
(/h'api/). Thus, the following words contrast:

    word   eSpeak   IPA
    happy  /h'api/  /hˈapi/
    been   /b'i:n/  /bˈiːn/
    bin    /b'In/   /bˈɪn/

Before this change, /h'api/ would be transcribed in IPA as /hˈapɪ/
which is wrong. After this change, it is transcribed correctly.

When running any of the following:

    espeak -x "[[]]"
    espeak --ipa "[[]]"

eSpeak would SEGFAULT. This is because phon_out_buf is NULL as no
phonemes have been written and as this is the first call to
GetTranslatedPhonemeString, the phoneme buffer has not been
allocated yet. However, GetTranslatedPhonemeString attempts to add
a NULL character to the end of the phoneme buffer, and thus crashes.

Android does not support UN M.49 territory codes. Instead:
  *  4.2 and earlier return an empty string;
  *  4.3 throws a MissingResourceException.

This is used to filter the list of languages returned. However, the
filtering is not needed on the engine side as the client can simply
enumerate through all the available voices instead.