issue #518: Add the 'е є ї' letters to the Y group in Translate_Russian, not SetCyrillicLetters.

src/libespeak-ng/tr_languages.c

 	static const char ru_hard[] = { 0x2a, 0x16, 0x26, 0x28, 0 }; // letter group H  [S Z ts] -- ъ ж ц ш
 	static const char ru_nothard[] = { 0x11, 0x12, 0x13, 0x14, 0x17, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1f, 0x20, 0x21, 0x22, 0x24, 0x25, 0x27, 0x29, 0x2c, 0 }; // б в г д з й к л м н п р с т ф х ч щ ь
 	static const char ru_voiced[] = { 0x11, 0x12, 0x13, 0x14, 0x16, 0x17, 0 };    // letter group G  (voiced obstruents) -- б в г д ж з
-	static const char ru_ivowels[] = { 0x15, 0x2c, 0x2e, 0x2f, 0x31,  0x34, 0x37, 0 };   // letter group Y  (iotated vowels & soft-sign) -- е ь ю я ё є ї
+	static const char ru_ivowels[] = { 0x2c, 0x2e, 0x2f, 0x31, 0 };   // letter group Y  (iotated vowels & soft-sign) -- ь ю я ё
 	tr->encoding = ESPEAKNG_ENCODING_KOI8_R;
 	tr->transpose_min = 0x430;  // convert cyrillic from unicode into range 0x01 to 0x22
 	tr->transpose_max = 0x451;
 {
 	static const unsigned char stress_amps_ru[] = { 16, 16, 18, 18, 20, 24, 24, 22 };
 	static const short stress_lengths_ru[8] = { 150, 140, 220, 220, 0, 0, 260, 280 };
-	static const char ru_ivowels2[] = { 0x18, 0 }; // add и to Y lettergroup (iotated vowels & soft-sign)
+	static const char ru_ivowels[] = { 0x15, 0x18, 0x34, 0x37, 0 }; // add "е и є ї" to Y lettergroup (iotated vowels & soft-sign)
 
 	SetupTranslator(tr, stress_lengths_ru, stress_amps_ru);
 	SetCyrillicLetters(tr);
-	SetLetterBits(tr, LETTERGP_Y, ru_ivowels2);
+	SetLetterBits(tr, LETTERGP_Y, ru_ivowels);
 
 	tr->langopts.param[LOPT_UNPRONOUNCABLE] = 0x432; // [v]  don't count this character at start of word
 	tr->langopts.param[LOPT_REGRESSIVE_VOICING] = 1;