Fixed crash on re-initializing libespeak.

lang=hu, experimental, if the last two words of a clause (before punctuation) both have capital letters, then make the last word unstressed.  This is useful for people names, but may be wrong for other cases.

lang=en-us, distinguish phonemes [aI@] and [aI3] (compare "diet", "tired").

lang=de, fix automatic devoicing of word-final 'b', 'd', 'g'.


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@276 d46cf337-b52f-0410-862d-fd96e6ae7743