Bad encoding of certain characters in vocal.itely

[Francisco Vila]

> I'm not top posting.

vocal.itely contains utf-8 characters but it is being saved as iso-8859-1, this
prevents docs from being built on my side because one of texinfo or pdfetex (not
sure) complain about non-existent characters.

The offending lines in vocal.itely are in
2.1.1.3 Entering lyrics (line 238) (2.1.1.2 in Spanish, line 224):
238 \addlyrics { He said: “Let my peo ple goâ€\235. }

and
2.1.4.1 Adding stanza numbers (line 838) (2.1.6.1 in Spanish, line 820):
838   Oh, ché -- ri, je t'aime

(line numbers added)

Spanish version of this file is correct and reads

224 \addlyrics { He said: “Let my peo ple go”. }

and

820   Oh, ché -- ri, je t'aime

respectively. (line numbers added)

These bugs affect both to PDF and HTML music snippets in these sections.
IIRC this very same bug was reported long ago.