x86: Add run-time memmove tests inlined with various bounds Add run-time memmove tests inlined with various bounds with overlapping source and destination. * gcc.target/i386/builtin-memmove-bounded-1a.c: New test. * gcc.target/i386/builtin-memmove-bounded-1b.c: Likewise. Signed-off-by: H.J. Lu <hjl.tools@gmail.com>