Correct MSVC Debug build options.
Revert "Correct MSVC Debug build options."

This reverts commit a60fd4755042186b0c995dcecc4f28cc2c6d8cb9.
Revert "Revert "Correct MSVC Debug build options.""

This reverts commit 251ad739e117adbe41227761e9adb08167275f1b.
Merge branch 'master' of https://github.com/OpenCPN/OpenCPN