mbrola: andd mb-nz1 voice

Makefile.am

 	espeak-ng-data/mbrola_ph/mx1_phtrans \
 	espeak-ng-data/mbrola_ph/mx2_phtrans \
 	espeak-ng-data/mbrola_ph/nl_phtrans \
+	espeak-ng-data/mbrola_ph/nz1_phtrans \
 	espeak-ng-data/mbrola_ph/pl1_phtrans \
 	espeak-ng-data/mbrola_ph/pt1_phtrans \
 	espeak-ng-data/mbrola_ph/ptbr_phtrans \
 	mkdir -p espeak-ng-data/mbrola_ph
 	ESPEAK_DATA_PATH=$(PWD) src/espeak-ng --compile-mbrola=phsource/mbrola/nl
 
+espeak-ng-data/mbrola_ph/nz1_phtrans: phsource/mbrola/nz1 src/espeak-ng
+	mkdir -p espeak-ng-data/mbrola_ph
+	ESPEAK_DATA_PATH=$(PWD) src/espeak-ng --compile-mbrola=phsource/mbrola/nz1
+
 espeak-ng-data/mbrola_ph/pl1_phtrans: phsource/mbrola/pl1 src/espeak-ng
 	mkdir -p espeak-ng-data/mbrola_ph
 	ESPEAK_DATA_PATH=$(PWD) src/espeak-ng --compile-mbrola=phsource/mbrola/pl1

docs/mbrola.md

 | `nl1`        | Dutch                | male   | `mb-nl1` <sup>[1](#footnote1)</sup> |   |
 | `nl2`        | Dutch                | male   | `mb-nl2` | `mbrola-nl2`   |
 | `nl3`        | Dutch                | female | `mb-nl3` |                |
-| `nz1`        | Maori                | male   |          |                |
+| `nz1`        | Maori                | male   | `mb-nz1` |                |
 | `pl1`        | Polish               | female | `mb-pl1` | `mbrola-pl1`   |
 | `pt1`        | Portuguese           | female | `mb-pt1` | `mbrola-pt1`   |
 | `ro1`        | Romanian             | male   | `mb-ro1` | `mbrola-ro1`   |

espeak-ng-data/voices/mb/mb-nz1

+name maori-mbrola-1
+language mi
+gender male
+mbrola nz1 nz1_phtrans
+

phsource/mbrola/nz1

+volume 15
+
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