This adds instrumentation to the binaries. At the end of their
execution, these will then write a file containing information which code
was executed. This can be used for code coverage analysis.
[ChangeLog][QtCore][configure] Add switch "-coverage source-based" to
enable clang's "source-based" code coverage feature. This can be used
for code coverage analysis.
Change-Id: If31c6849aa797ff8820e041e85a492a14e2f1a6b
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
