data(kana): Mozc's romaji table

hira.map and kata.map knew 152 keys of the 320 every Japanese IME
accepts: no nn, no small kana by x or l (xtu, xya, la, ...), no sya, tya,
zya, jya, dya, cya, tsa, thi, dhi, twu, kye, ye, fya, wha, and zi gave ぢ.
Both are now Mozc's default table in full, kata.map in Katakana, so that
they agree (kata.map alone had di → ディ and a lone v).  With Mozc, wi
and we are うぃ and うぇ (wyi and wye the old kana), the v row is ゔ, nn
is ん, and [ ] ~ and the z-prefixed symbols type 「 」 〜 ・ … ← ↓ ↑ →.

n' is a row now, not a case in transjp.  A row whose value is っ keeps
its consonant pending only when it is a doubled consonant or tch: xtu
and ltu are っ itself, so a lone っ can finally be typed.

Makefile

@@ -89,6 +89,7 @@ check-stress: $(PROG)
 test: check
 
 verify-map:
+	test "$$(cut -f1 map/hira.map)" = "$$(cut -f1 map/kata.map)"
 	python3 map/mktelex.py | cmp - map/telex.map
 	python3 -B map/mkemoji | cmp - map/emoji.dict
 	python3 -B map/mkhanja | cmp - map/hanja.dict