Implement constant folding in the IR backend for JVM

The newly added pass folds the set of constant functions of the
current backend, plus IrBuiltIns.

compiler/testData/codegen/bytecodeText/constants/comparisonFalse.kt

@@ -0,0 +1,22 @@
+// TARGET_BACKEND: JVM_IR
+
+fun foo(): Array<Boolean> {
+    return arrayOf(
+        0.0 / 0 == 0.0 / 0,
+        0.0F > -0.0F,
+        0.0.equals(-0.0),
+        (0.0 / 0.0).equals(1.0 / 0.0)
+    )
+}
+
+// Disabled: current backend doesn't fold them.
+// 4 INVOKESTATIC
+// 4 INVOKESTATIC java/lang/Boolean.valueOf
+// 1 ICONST_1
+// 5 ICONST_0
+// 0 IFEQ
+// 0 IFNE
+// 0 IFGE
+// 0 IFGT
+// 0 IFLE
+// 0 IFLT