[Java] Generate SuppressWarnings annotation for enum types. Issue aeron-io#894.

Author: mjpt777

sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/java/JavaGenerator.java

@@ -1673,6 +1673,7 @@ private void generateMetaAttributeEnum() throws IOException
  "/**\n" +
  " * Meta attribute enum for selecting a particular meta attribute value.\n" +
  " */\n" +
+ " @SuppressWarnings(\"all\")\n" +
  "public enum MetaAttribute\n" +
  "{\n" +
  " /**\n" +
@@ -1700,7 +1701,7 @@ private static CharSequence generateEnumDeclaration(final String name, final Tok
  final StringBuilder sb = new StringBuilder();
 
  generateTypeJavadoc(sb, BASE_INDENT, typeToken);
- sb.append("public enum ").append(name).append("\n{\n");
+ sb.append("@SuppressWarnings(\"all\")\n").append("public enum ").append(name).append("\n{\n");
 
  return sb;
  }

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/ByteOrderCodec.java

@@ -5,6 +5,7 @@
 /**
  * Number encoding byte order.
  */
+@SuppressWarnings("all")
 public enum ByteOrderCodec
 {
 

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/MetaAttribute.java

@@ -4,6 +4,7 @@
 /**
  * Meta attribute enum for selecting a particular meta attribute value.
  */
+ @SuppressWarnings("all")
 public enum MetaAttribute
 {
  /**

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/PresenceCodec.java

@@ -5,6 +5,7 @@
 /**
  * Field presence declaration.
  */
+@SuppressWarnings("all")
 public enum PresenceCodec
 {
 

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/PrimitiveTypeCodec.java

@@ -5,6 +5,7 @@
 /**
  * Primitive types in type system.
  */
+@SuppressWarnings("all")
 public enum PrimitiveTypeCodec
 {
 

sbe-tool/src/main/java/uk/co/real_logic/sbe/ir/generated/SignalCodec.java

@@ -5,6 +5,7 @@
 /**
  * Token signal type in IR.
  */
+@SuppressWarnings("all")
 public enum SignalCodec
 {