Merge branch 'js/ps-build-cmake-fixup'

Build fixes for Windows. * js/ps-build-cmake-fixup: cmake/vcxproj: stop special-casing `remote-ext` cmake: put the Perl modules into the correct location again cmake: use the correct file name for the Perl header cmake(mergetools): better support for out-of-tree builds cmake: better support for out-of-tree builds follow-up