Quote the paths in binary_has_prefix_files on Windows
Quote the paths in binary_has_prefix_files on Windows

This, in conjunction with the change from conda commit
1ff0f072fb6514087199c4058eb3c8ecc24e1235, allows binary_has_prefix_files with
paths that contain spaces on Windows.

shastings517/conda-build,mwcraig/conda-build,sandhujasmine/conda-build,dan-blanchard/conda-build,dan-blanchard/conda-build,rmcgibbo/conda-build,rmcgibbo/conda-build,shastings517/conda-build,mwcraig/conda-build,takluyver/conda-build,sandhujasmine/conda-build,shastings517/conda-build,mwcraig/conda-build,takluyver/conda-build,frol/conda-build,frol/conda-build,ilastik/conda-build,frol/conda-build,rmcgibbo/conda-build,dan-blanchard/conda-build,sandhujasmine/conda-build,takluyver/conda-build,ilastik/conda-build,ilastik/conda-build