tar 1.15.91 doesn't support mixed mode paths

[Eric Johanson]

tar 1.15.91 does not support the use of mixed-mode paths via the "f"
command-line option.  for example, if you run the command:
	tar tvf c:/temp/myfile.tar

then you get the following error message from tar:
	d: Unknown Host
	tar: c\:/temp/myfile.tar: Cannot open: Input/Output error
	ar: Error is not recoverable: exiting now

tar is one of the few commands with a problem like this.  it would be
really nice to see it fixed.  based on the error message "d: Unknown
Host", it sounds like tar is trying to interpret the colon as a
node-name seperator, similar to the way that "rcp" does.  is that a
feature of tar?  i didn't see anything like that in the documentation
for tar but i could have missed it.

-Eric Johanson
Newpoint Technologies, Inc.