For this, we have to uninline the separate_debug_info configure test,
because supporting the conversion of this in configurejson2cmake is not
worth the hassle.
Separate debug information can be turned on for a target by calling the
function qt_enable_separate_debug_info. For Qt's shared libraries and
tools separate debug information is generated if the
'separate_debug_info' feature is manually turned on.
Change-Id: Ic2ffc15efef3794dc0aa42f3d853ef6d651a751c
Reviewed-by: Leander Beernaert <leander.beernaert@qt.io>
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
