Eli Schwartz authored Feb 07, 2018 and Allan McRae committed Mar 14, 2018

Additionally provide a separate error for failure to create the
directory vs lack of write permissions on a pre-existing directory.

This also means we now consistently try to create any nonexistent *DEST
directories as needed before aborting with E_FS_PERMISSIONS. Previously
only $BUILDDIR received that kindness.

Fixes FS#43537

Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>