[PATCH] Teach rtems_tarfs_load() about symlinks

[Nick Withers]

Hi all,

The attached patch teaches rtems_tarfs_load() about symlinks, as well as
making it fail if it encounters an unsupported tar file entry type
(e.g., hard links) rather than silently ignoring the 512 B block.

It tries to be consistent with the existing code which doesn't e.g.
check tar string field NUL termination or printf() on error.

Happy Friday for those in the "right" time-zones!
-- 
Nick Withers

Embedded Systems Programmer
Department of Nuclear Physics, Research School of Physics and Engineering
The Australian National University (CRICOS: 00120C)
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