mupdf: update to 1.26.12

[ldwgchen]

Testing the changes

• I tested the changes in this PR: briefly

Local build testing

• I built this PR locally for my native architecture, (x86_64-glibc)
• I built this PR locally for these architectures (crossbuilds):
  • armv6l
  • x86_64-musl

Notes: I'm terribly sorry for closing and reopening the PR instead of force pushing. It won't happen again.

arcan and fbpdf already do not build without the introduced changes. They should be fixed in separate PRs.

[dogknowsnx]

Can you bump zathura-pdf-mupdf to 0.4.6 ?

[ldwgchen]

Can you bump zathura-pdf-mupdf to 0.4.6 ?

Yes that should be easy. But should it be a separate PR? I'm not sure about the rules on this... (I'll do it here anyway)

[dogknowsnx]

Can you bump zathura-pdf-mupdf to 0.4.6 ?

Yes that should be easy. But should it be a separate PR? I'm not sure about the rules on this... (I'll do it here anyway)

In this case, you might just as well update zathura-pdf-mupdf instead of revbumping, it doesn't provide any shared objects and it (the updated version) requires mupdf 1.26 anyway.

[ldwgchen]

Update on zathura-pdf-mupdf was briefly tested with zathura-0.5.13_1 (current version) and #57776 on x86_64-glibc.