Fixed printing multiple errors in Kotlin signatures.

compiler/testData/cli/wrongKotlinSignature.kt

@@ -1,3 +1,4 @@
 package test;
 
-val x = ClassWithWrongKotlinSignature.foo()
+val x = ClassWithWrongKotlinSignatures.foo()
+val y = ClassWithWrongKotlinSignatures.bar()

compiler/testData/cli/wrongKotlinSignature.out

@@ -1,4 +1,7 @@
 ERROR: The following Java entities have annotations wrong Kotlin signatures:
-ClassWithWrongKotlinSignature java.lang.String foo(): Function names mismatch, original: foo, alternative: bar
+ClassWithWrongKotlinSignatures java.lang.String foo():
+    Function names mismatch, original: foo, alternative: bar
+ClassWithWrongKotlinSignatures java.lang.String bar():
+    Function names mismatch, original: bar, alternative: foo
 
 COMPILATION_ERROR

compiler/testData/cli/wrongKotlinSignatureLib/ClassWithWrongKotlinSignatures.java

@@ -1,8 +1,13 @@
 import jet.runtime.typeinfo.KotlinSignature;
 
-public class ClassWithWrongKotlinSignature {
+public class ClassWithWrongKotlinSignatures {
     @KotlinSignature("fun bar() : String")
     public static String foo() {
         throw new UnsupportedOperationException();
     }
+
+    @KotlinSignature("fun foo() : String")
+    public static String bar() {
+        throw new UnsupportedOperationException();
+    }
 }