Christian Schwede 78a4070c90 Fix misleading error msg if swift.conf unreadable
Several tools are returning a misleading error message if swift.conf is
missing or not readable by the user, stating that the hash pre-/suffixes
are missing. Let's fix this by catching the real issue down below.

Change-Id: I7a47e6260ed51a3b7d9665b3a4510520429ae158
2019-10-10 17:55:28 -07:00
..
2010-07-12 17:03:45 -05:00