Rename FindWrapDoubleConversion.cmake into
FindWrapSystemDoubleConversion.cmake.
Merge contents of Finddouble-conversion.cmake into the one above.
This allows users to provide their own Finddouble-conversion.cmake
file (Conan can do it).
Don't mark the system package as required, because we have a bundled
one too.
Add link to upstream.
Make sure to show either Config file or library path when one is
found.
Pick-to: 6.2 6.3 6.4
Fixes: QTBUG-104541
Change-Id: I9ea2330697c6fc280328849ca11522291c4073d8
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
