Re: PDF docs for 2.19.82 broken/missing fonts

[Masamichi Hosoda]

Thank you for your logs.

If I understand correctly,
the time when the intermediate PDF (missing fonts) exist is extremely short.

e.g.
`input/regression/lilypond-book/suffix-tely.pdf`
in lilypond-doc.log

L1186      : texi2pdf       (intermeidate PDF suffix-tely.pdf is generated)
L1187      : extractpdfmark (PDFmark is extracted)
L1188-L1193: gs             (final PDF suffix-tely.final.pdf is generated)
L1194      : rm             (intermediate PDF suffix-tely.pdf is removed)
L1195      : mv             (final PDF suffix-tely.final.pdf
                             is renamed to suffix-tely.pdf)
L14091     : www_post       (copying document files to offline-root)
L14109     : rsync          (copying offline-root to lilypond-doc-2.19.82-root)
L14217     : tar            (lilypond-2.19.81-1.documentation.tar.bz2
                             is generated)

The intermediate PDF `suffix-tely.pdf` exists only between L1186 and L1194.
`suffix-tely.pdf` is copied to offline-root at L14091
which is quite later since the intermediate PDF has removed.

However, `suffix-tely.pdf` in lilypond-2.19.81-1.documentation.tar.bz2
is the intermediate PDF.

```
$ pdfinfo suffix-tely.pdf
Creator:         XeTeX output 2018.06.24:1337
Producer:       xdvipdfmx (0.7.9)
CreationDate:   Sun Jun 24 21:37:54 2018 JST
...
```

In the other hand, non-English,
e.g. `Documentation/web.nl.pdf`
in lilypond-doc.log

L13134     : texi2pdf       (intermediate pdf web.pdf for nl is generated)
L13205     : extrectpdfmark (PDFmark is extracted)
L13208     : gs             (final PDF web.final.pdf for nl is generated)
L13521     : rm             (intermediate PDF web.pdf for nl is removed)
L13522     : mv             (final PDF web.final.pdf for nl
                             is renamed to web.pdf)
L13524     : cp             (final PDF web.final.pdf for nl
                             is copied to web.nl.pdf)
L14091     : www_post       (copying document files to offline-root)
L14109     : rsync          (copying offline-root to lilypond-doc-2.19.82-root)
L14217     : tar            (lilypond-2.19.81-1.documentation.tar.bz2
                             is generated)

The time between removing the intermediate PDF and copying to offline-root
is shorter than suffix-tely.pdf case.
However, `web.nl.pdf` in lilypond-2.19.81-1.documentation.tar.bz2
is the final PDF.

```
$ pdfinfo web.nl.pdf
Creator:         XeTeX output 2018.06.24:1355
Producer:       GPL Ghostscript 9.21
CreationDate:   Sun Jun 24 21:55:44 2018 JST
ModDate:        Sun Jun 24 21:55:44 2018 JST
...
```

I have no idea why the intermediate PDF that have removed beforehand remains.