mbrola: add mb-in1 and mb-in2 voices

as phoneme set for both is the same, rename phoneme translation file to in

Makefile.am

 	espeak-ng-data/mbrola_ph/hu1_phtrans \
 	espeak-ng-data/mbrola_ph/ic1_phtrans \
 	espeak-ng-data/mbrola_ph/id1_phtrans \
-	espeak-ng-data/mbrola_ph/in1_phtrans \
+	espeak-ng-data/mbrola_ph/in_phtrans \
 	espeak-ng-data/mbrola_ph/ir1_phtrans \
 	espeak-ng-data/mbrola_ph/it1_phtrans \
 	espeak-ng-data/mbrola_ph/it3_phtrans \
 	mkdir -p espeak-ng-data/mbrola_ph
 	ESPEAK_DATA_PATH=$(PWD) src/espeak-ng --compile-mbrola=phsource/mbrola/id1
 
-espeak-ng-data/mbrola_ph/in1_phtrans: phsource/mbrola/in1 src/espeak-ng
+espeak-ng-data/mbrola_ph/in_phtrans: phsource/mbrola/in src/espeak-ng
 	mkdir -p espeak-ng-data/mbrola_ph
-	ESPEAK_DATA_PATH=$(PWD) src/espeak-ng --compile-mbrola=phsource/mbrola/in1
+	ESPEAK_DATA_PATH=$(PWD) src/espeak-ng --compile-mbrola=phsource/mbrola/in
 
 espeak-ng-data/mbrola_ph/ir1_phtrans: phsource/mbrola/ir1 src/espeak-ng
 	mkdir -p espeak-ng-data/mbrola_ph

docs/mbrola.md

 | `hn1`        | Korean               | male   |          |                |
 | `hu1`        | Hungarian            | female | `mb-hu1` | `mbrola-hu1`   |
 | `ic1`        | Icelandic            | male   | `mb-ic1` | `mbrola-ic1`   |
-| `in1`        | Hindi                | male   |          |                |
+| `in1`        | Hindi                | male   | `mb-in1` |                |
-| `in2`        | Hindi                | female |          |                |
+| `in2`        | Hindi                | female | `mb-in2` |                |
 | `id1`        | Indonesian           | male   | `mb-id1` | `mbrola-id1`   |
 | `ir1`        | Iranian Persian      | male   | `mb-ir1` | `mbrola-ir1`   |
 | `it1`        | Italian              | male   | `mb-it1` |                |

espeak-ng-data/voices/mb/mb-in1

+name hindi-mbrola-1
+language hi 1
+gender male
+mbrola in1 in_phtrans
+

espeak-ng-data/voices/mb/mb-in2

+name hindi-mbrola-2
+language hi 2
+gender female
+pitch 140 220
+mbrola in2 in_phtrans
+

phsource/mbrola/in1 → phsource/mbrola/in

+volume 15
+
 0  l/2 NULL  0  l
 0  l/ NULL  0  l
 0  r/ NULL   0  r
 0  aI NULL   0  ai
 0  aU NULL   0  au
 
-0  o~ NULL   60  o  n
+0  o~ NULL   0  o
-0  O~ NULL   60  au n
+0  O~ NULL   0  au
-0  u~ NULL   60  uu n
+0  u~ NULL   0  uu
 
 0  H  NULL   0  h
 0  p# NULL   0  ph