vector-reverse! doesn't respect start and end.

[Takashi Kato]

This should be reversed

(vector-reverse! (vector 1 2 3 4 5 6 7 8 9 10) 3 7)
;; -> #(1 2 3 4 5 6 7 8 9 10)

expected is #(1 2 3 7 6 5 4 8 9 10)

[Takashi Kato]

Modified vector-reverse! and bytevector-reverse! to respect start/end argument correctly (Fixes #80)

→ <<cset 9a235531ebcf>>