pango: update to 1.56.0

[bgilbert]

Build errors:

1. MSYS builds throw a bunch of redefinition errors in the cairo dwrite code. Not sure why this doesn't happen when building cairo directly. Worked around with cairo:dwrite=disabled.

2. MSYS builds fail on:

   In file included from ../subprojects/sysprof/src/libsysprof-capture/sysprof-capture-reader.c:69:
   In file included from ../subprojects/sysprof/src/libsysprof-capture/sysprof-capture-reader.h:61:
   ../subprojects/sysprof/src/libsysprof-capture/sysprof-capture-types.h:63:11: fatal error: 'endian.h' file not found
   

   pango provides a valid sysprof.wrap that it doesn't use by default, but this causes glib to autodetect sysprof and fall back to the wrap. In turn, libsysprof tries to use endian.h, which doesn't exist on Windows. We don't see this in glib builds because glib's own sysprof.wrap doesn't list any provides and so is ignored.

   Worked around with glib:sysprof=disabled.

3. MSVC clang-cl fails on this:

   FAILED: subprojects/cairo-1.18.2/src/cairo-2.dll subprojects/cairo-1.18.2/src/cairo-2.pdb 
   "lld-link" @subprojects/cairo-1.18.2/src/cairo-2.dll.rsp
   lld-link: error: undefined symbol: __udivti3
   >>> referenced by D:\a\wrapdb\wrapdb\subprojects\cairo-1.18.2\src\cairo-wideint.c:390
   >>>               subprojects/cairo-1.18.2/src/cairo-2.dll.p/cairo-wideint.c.obj:(_cairo_uint128_divrem)
   lld-link: error: undefined symbol: __umodti3
   >>> referenced by D:\a\wrapdb\wrapdb\subprojects\cairo-1.18.2\src\cairo-wideint.c:391
   >>>               subprojects/cairo-1.18.2/src/cairo-2.dll.p/cairo-wideint.c.obj:(_cairo_uint128_divrem)
   

   Looks like this bug: Clang-cl generates a call to an undefined symbol __udivti3 llvm/llvm-project#25679

   Not sure why cairo builds don't see this, and there's no evident workaround.

[neheb]

I've seen that udiv issue too. I don't remember finding a good way to fix it.

[bgilbert]

Should we land this then?