ipa:phoneme - cover all places of articulation

This adds the following features to Kirshenbaum:

    alp alveolo-palatal
    lbp labio-palatal
    epg epiglottal

enabling support for the special characters listed in the 'OTHER
SYMBOLS' section of the IPA chart, except for the special character
for /S_w/ (simultaneous /x/ and /S/) whose existence is disputed.