[MC,test] Reorganize relax-recompute-align.s & layout-interdependency.s

relax-recompute-align.s might change when we change the fragment
relaxation approach.

Author: MaskRay

llvm/test/MC/AsmParser/layout-interdependency.s renamed to llvm/test/MC/ELF/layout-interdependency.s

@@ -0,0 +1,23 @@
+// RUN: llvm-mc -filetype=obj -triple i386 %s -o - | llvm-objdump -d --no-show-raw-insn - | FileCheck %s
+
+// This is a case where llvm-mc computes a better layout than Darwin 'as'. This
+// issue is that after the first jmp slides, the .align size must be
+// recomputed -- otherwise the second jump will appear to be out-of-range for a
+// 1-byte jump.
+
+// CHECK:            int3
+// CHECK-NEXT:  ce:  int3
+// CHECK:       d0:  pushal
+// CHECK:      130:  jl      0xd0
+
+L0:
+        .space 0x8a, 0x90
+	jmp	L0
+        .space (0xb3 - 0x8f), 0x90
+	jle	L2
+        .space (0xcd - 0xb5), 0x90
+	.p2align 4, 0xcc
+L1:
+        .space (0x130 - 0xd0),0x60
+	jl	L1
+L2: