Rename ph_{ipa => japanese}.

Makefile.am

 	phsource/ph_icelandic \
 	phsource/ph_indonesian \
 	phsource/ph_interlingua \
-	phsource/ph_ipa \
 	phsource/ph_irish \
 	phsource/ph_italian \
+	phsource/ph_japanese \
 	phsource/ph_kannada \
 	phsource/ph_kazakh \
 	phsource/ph_kinyarwanda \

espeak-ng-data/voices/jpx/jp

 language jp
 name japanese
-phonemes ipa
+phonemes jp
 gender male
 
 intonation 4

phsource/ph_ipa → phsource/ph_japanese

-// International Phonetic Alphabet: Narrow Transcription
+// Japanese Phonemes
 //
 // Copyright (C) 2017 Reece H. Dunn
 //
   vcd uvl nasal
   ipa ɴ
   // FIXME: Stub phoneme.
-  CALL ipa/n
+  CALL jp/n
 endphoneme
 
 // Plosives

phsource/phonemes

 // ADDITIONAL PHONEME TABLES
 //*******************************************************************
 
-phonemetable ipa base
-include ph_ipa
+phonemetable jp base
+include ph_japanese
 
 phonemetable consonants base
 include ph_consonants