Language changes to: an, en, gu, it, pt, ta.

Superscripts and subscripts are spoken as single letters and numbers during njormal speech, and with "superscript" and "subscript" spoken when spelling.


git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@367 d46cf337-b52f-0410-862d-fd96e6ae7743