DeployVST cmake attempts to fix-up non EAR plugins in destination dir

[rsjbailey]

When running the cmake install target on macos, some helper functions are called to 'fixup' the rpaths of dependencies within the deployed plugin bundles.
In do_install_all_vst3_dependencies, the paths passed to bundleutils are determined by using a file glob with the *.vst3 pattern. If using the default install directory (~/Library/Audio/Plug-Ins/VST3) this results in all plugins in the User VST3 directory being fixed up, rather than just ours. This could potentially have some unusual effects on third party plugins, so we shouldn't do it.

[firthm01]

To check again - a lot of script work since this ticket