* gcc.target/s390: New directory.
	* gcc.target/s390/s390.exp: New file.
	* gcc.dg/20020926-1.c, gcc.dg/20030123-1.c, gcc.dg/20030129-1.c,
	gcc.dg/20040305-1.c, gcc.dg/20041109-1.c, gcc.dg/20041216-1.c,
	gcc.dg/20050409-1.c, gcc.dg/20050524-1.c, gcc.dg/20050824-1.c,
	gcc.dg/pr20927.c, gcc.dg/pr24624.c, gcc.dg/pr27661.c: Move to
	gcc.target/s390 directory.

From-SVN: r127738