[CMAKE] Fix the prl conversion script library path issue
The prl conversion script contrib/qt/convert-rpl-libs-to-cmake.pl
determines the library installation directory as being the given library
While this is true in most cases, it fails with plugins libraries which
are located in their own subtree.
This diff adds a new argument to the perl script so the caller can set
the library directory.
Also adds some quotes surrounding the paths to avoid dealing with issues
Depends on D2947.
cmake -DCMAKE_TOOLCHAIN_FILE=../cmake/platforms/Win64.cmake -GNinja \ -DBUILD_BITCOIN_SEEDER=OFF .. ninja
Check the build is successful
Reviewers: #bitcoin_abc, deadalnix
Reviewed By: #bitcoin_abc, deadalnix
Differential Revision: https://reviews.bitcoinabc.org/D2948