builder/common: step to create floppy disks
builder/vmware: support floppy_files for mounting a floppy disk
script: build completes
builder/common: continue after creating floppy
packer: Only trim whitespace on the right of prefixed UI
builder/virtualbox: support floppy_files
website: document the floppy_files feature
builder/virtualbox: remove floppy drive before exporting
builder/virtualbox: paused is still running
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