Add patch to mingw-w64-gcc after updating to 14.1.1 to fix build errors
like:
```
<built-in>: error: conflicting declaration of C function ‘int __cxxabiv1::__cxa_thread_atexit(void (*)(), void*, void*)’
In file included from /home/devel/.cache/aurman/mingw-w64-paraview/src/ParaView-v5.12.0/build-x86_64-w64-mingw32/VTK/Common/Core/vtkCxxABIConfigure.h:10,
from /home/devel/.cache/aurman/mingw-w64-paraview/src/ParaView-v5.12.0/VTK/Common/Core/vtkTypeName.h:7,
from /home/devel/.cache/aurman/mingw-w64-paraview/src/ParaView-v5.12.0/VTK/Common/DataModel/vtkCellGrid.h:28:
/usr/x86_64-w64-mingw32/include/c++/14.1.1/cxxabi.h:140:3: note: previous declaration ‘int __cxxabiv1::__cxa_thread_atexit(void (*)(void*), void*, void*)’
140 | __cxa_thread_atexit(void (_GLIBCXX_CDTOR_CALLABI *)(void*), void*, void *) _GLIBCXX_NOTHROW;
```
* Use `git+https://sourceware.org/git/gcc.git` consistently in both
packages
* Remove ada from static-compat-gcc because it leads to build failures and
adding even more workarounds for this language is not worth it
* Workaround certain warnings now being treated as errors in mingw-w64-gcc
The switch to Qt 6 is required for the ICU 75 rebuild because only when using
Qt 6 the build system uses C++ 17 which is required as of ICU 75.
Unfortunately it doesn't build against Qt 6 / KF6 yet so I'm dropping it from
the binary repo for now.
* Set consistent Android API level
* Ensure make utilizes all CPU cores if `MAKEFLAGS` are otherwise cleared
via `!buildflags` because this is nevertheless wanted in mingw-w64 and
android packages (that usually set `!buildflags`)
* Ensure required devel packages are installed
It uses the `makechrootpkg` flag `-Y` only present in devtools-custom as of
1.1.1 unconditionally (before 1.1.1 it was `-C`. So at least at this point
it makes sense to make it a hard dependency.
Martchus
Gonzalo Exequiel Pedone