RelWithDebInfo builds fail on Windows

[martygrant]

@sommerlukas reported that building DPC++ on Windows with a RelWithDebInfo config fails with errors relating to XPTI:

_deps\unified-runtime-src\source\loader\layers\tracing\ur_tracing_layer.cpp(15): fatal error C1083: Cannot open include file: 'xpti/xpti_data_types.h': No such file or directory

He was able to resolve this with an older build but found another issue with unresolved symbols:

__imp__invalid_parameter
__imp__CrtDbgReport

And also mismatches with _ITERATOR_DEBUG_LEVEL and RuntimeLibrary

_ITERATOR_DEBUG_LEVEL is possibly due to linking the wrong lib C - @kbenzie

This is something that should be investigated, it is noted that normal Debug and Release builds do work successfully.