languages: Rename hy-arevmda => hyw.

A new 'hyw' language code has been registered for Western Armenian,
and the arevela and arevmda variant subtags have been deprecated.

This still accepts the hy-arevela and hy-arevmda language tags, but
uses the preferred names for the language files.

espeak-ng-data/lang/ine/hy-arevmda → espeak-ng-data/lang/ine/hyw

@@ -1,9 +1,13 @@
 name Armenian (West Armenia)
+language hyw
 language hy-arevmda
 language hy  8
 
+dictionary hy
 dictrules 1
 
+phonemes hy
+
 // change consonants for West Armenian pronunciation
 replace 00 b  p#
 replace 00 d  t#