K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2014-09-23T11:41:09.206641Z
K 7
svn:log
V 370
install: re-check failed mkdir for EEXIST

Since the code stats and mkdirs in 2 separate steps, it is possible that
the directory will be created in the meantime by something else (e.g.
concurrent install).[1]

While here alter the code to properly report stat failure, previously it
would always claim it was mkdir which failed.

Noted by: royger [1]
MFC after:	1 week

END