It should be easier to debug test crashes happening in Coin

Right now we have basic support for core dumps implemented in QTQAINFRA-990. However, according to tosaario it just collects cores as another kind of artifacts, and it's impossible to do extract any information from them without access to original VM.

I can see two ways how to improve situation (at least for Linux configurations):

• Preload libSegFault.so (part of glibc) or something similar
  Should be very easy to implement on Linux
  May be used not only when running tests but for builds as well, however I'm not 100% sure it has no performance penalty
  no idea if off-the shelf macOS equivalent exists
• Process collected cores with gdb at the end of Coin run
  Main complexity here is to match core files with executables which crashed. On Linux it's possible to include full path of executable file into core_pattern (%E, available since 3.0 kernel). AFAIK on macOS it's always just core.$pid