Move ld-scripts size tests

Move ld-scripts size tests

Also restore them somewhat closer to the original.  They originally
failed on many targets, and a month later I "simplified" them as part
of a larger patch fixing other failing tests.  That unfortunately lost
their main purpose, which was to test TLS layout.

	* testsuite/ld-elf/size-1.d,
	* testsuite/ld-elf/size-1.s,
	* testsuite/ld-elf/size-1.t: New test.
	* testsuite/ld-elf/size-2.d,
	* testsuite/ld-elf/size-2.s,
	* testsuite/ld-elf/size-2.t: New test.
	* testsuite/ld-scripts/size-1.d,
	* testsuite/ld-scripts/size-1.s,
	* testsuite/ld-scripts/size-1.t,
	* testsuite/ld-scripts/size-2.s,
	* testsuite/ld-scripts/size-2.d,
	* testsuite/ld-scripts/size-2.t,
	* testsuite/ld-scripts/size.exp: Delete.