See comment in callvirtualmethod.cxx for details.

Otherwise there's a build dependency missing (and it's apparently
not needed anyway).

Substreams (headers, footers, etc.) are parsed separately, so their font
table is empty by default. Fix handling of custom fonts (and thus
encodings) there by passing a pointer to the superstream.

Additionally the table should be at the start of the document to trigger
this bug.

 We never used cairocanvas on Win, this got accidentally enabled
due to configure.in cleanups. Not that we shouldn't, but it needs
some more fixing ( Analog of Thorsten's Mac commit for fdo#45584 )

This is hopefully a better fix for c589fa17
"Dalvik enforces byte constants being in range (-128..127)."

msvc can't handle the necessary template overload (and maybe it's
right, I'm not sure)

...solved by recasting the offending expression.

Revert "this requires string literals now" and "fix after recent
XSERVICEINFO_IMPL_1 change".

This reverts commits f7d571d2 and
186ab8e7.

Thist idea caused too intrusive changes to the code of call sites, I
think. Will do it another way that leaves call sites as is.

This reverts commit 25d114ee.