* config/sparc/sol2-64.h: Move ...
	* config/sparc/default-64.h: ... to here.  Update comment.
	* config.gcc: Update Solaris sparc to use default-64.h, also
	prefix this header into the list on sparc64-*-linux.
	* config/sparc/linux64.h (TARGET_DEFAULT): Only override if
	TARGET_64BIT_DEFAULT is defined.  Remove commented out reference
	to MASK_HARD_QUAD.

From-SVN: r178558