2012/03/30 - Mark Hatle <mark.hatle@windriver.com>
 - Initial Revision

Both big endian and little endian are defined for SH.

Experimental -- SH tunings have not been validated.

The TUNE_ARCH is defined as ${TUNE_ARCH_tune-${DEFAULTTUNE}}.

The TUNE_PKGARCH is defind as ${TUNE_PKGARCH_tune-${DEFAULTTUNE}}.