CI: upload a process minidump in case something crashes
CI: upload a process minidump in case something crashes

In case something crashes in CI this will show us some
information on which program crashed and why.

We register procdump as a JIT debugger which dumps the process
memory into a new file if triggered. To enable the JIT debugger
in the context of cygwin we need to set MSYS=winjitdebug.

The resulting dump file can for example be analyzed with
minidump-stackwalk or minidump_stackwalk

stahta01/MINGW-packages,oscarfv/MINGW-packages,stahta01/MINGW-packages,oscarfv/MINGW-packages,oroppas/MINGW-packages,stahta01/MINGW-packages,oroppas/MINGW-packages,JPeterMugaas/MINGW-packages,lhmouse/MINGW-packages,lhmouse/MINGW-packages,oroppas/MINGW-packages,JPeterMugaas/MINGW-packages,JPeterMugaas/MINGW-packages,oscarfv/MINGW-packages,JPeterMugaas/MINGW-packages,stahta01/MINGW-packages,lhmouse/MINGW-packages,lhmouse/MINGW-packages,oscarfv/MINGW-packages,oroppas/MINGW-packages,oscarfv/MINGW-packages,oroppas/MINGW-packages,stahta01/MINGW-packages,oroppas/MINGW-packages,oscarfv/MINGW-packages,lhmouse/MINGW-packages,JPeterMugaas/MINGW-packages,lhmouse/MINGW-packages,stahta01/MINGW-packages,JPeterMugaas/MINGW-packages