moved crates in lib/ to src/, renamed crates, modified some files' text (#660)

moved crates in lib/ to src/, renamed crates, modified some files' text (#660)

cranelift/filetests/filetests/regalloc/schedule-moves.clif

@@ -0,0 +1,39 @@
+test regalloc
+target i686 haswell
+
+function %pr165() system_v {
+ebb0:
+    v0 = iconst.i32 0x0102_0304
+    v1 = iconst.i32 0x1102_0304
+    v2 = iconst.i32 0x2102_0304
+    v20 = ishl v1, v0
+    v21 = ishl v2, v0
+    v22 = sshr v1, v0
+    v23 = sshr v2, v0
+    v24 = ushr v1, v0
+    v25 = ushr v2, v0
+    istore8 v0, v1+0x2710
+    istore8 v1, v0+0x2710
+    return
+}
+
+; Same as above, but use so many registers that spilling is required.
+; Note: This is also a candidate for using xchg instructions.
+function %emergency_spill() system_v {
+ebb0:
+    v0 = iconst.i32 0x0102_0304
+    v1 = iconst.i32 0x1102_0304
+    v2 = iconst.i32 0x2102_0304
+    v3 = iconst.i32 0x3102_0304
+    v4 = iconst.i32 0x4102_0304
+    v20 = ishl v1, v0
+    v21 = ishl v2, v3
+    v22 = sshr v1, v0
+    v23 = sshr v2, v0
+    v24 = ushr v1, v0
+    v25 = ushr v2, v0
+    istore8 v0, v1+0x2710
+    istore8 v1, v0+0x2710
+    istore8 v3, v4+0x2710
+    return
+}