Bug 167450 [DataBinding] Get rid of bind support factory magic
I finally realized that we don't need that other magic factory. I'll move fillBindSpecDefaults() and the methods it calls (createConverter, createValidator etc) to a new class DefaultBindSpec. Clients who want default validators and converters created for them just create a DefaultBindSpec as opposed to a (rather empty) BindSpec. I will also move the early type checking into DefaultBindSpec to make it optional as well.
bundles/org.eclipse.core.databinding/src/org/eclipse/core/databinding/DefaultBindSupportFactory.java
converterMap
					.put(
							new Pair(BYTE_TYPE, "java.lang.Byte"), new IdentityConverter(Byte.TYPE, Byte.class)); 
			converterMap
					.put(
							new Pair(BYTE_TYPE, "java.lang.String"), new ToStringConverter(Byte.TYPE)); 
			converterMap
					.put(
							new Pair(BYTE_TYPE, "java.lang.Object"), new IdentityConverter(Byte.TYPE, Object.class)); 
			
			converterMap
					.put(
							new Pair("java.lang.String", DOUBLE_TYPE), "org.eclipse.core.databinding.conversion.ConvertString2DoublePrimitive"); 
			converterMap
					.put(
							new Pair(DOUBLE_TYPE, "java.lang.Double"), new IdentityConverter(Double.TYPE, Double.class)); 
			converterMap
					.put(
							new Pair(DOUBLE_TYPE, "java.lang.String"), new ToStringConverter(Double.TYPE)); 
			converterMap
					.put(
							new Pair(DOUBLE_TYPE, "java.lang.Object"), new IdentityConverter(Double.TYPE, Object.class)); 
			
			converterMap
					.put(
							new Pair("java.lang.String", BOOLEAN_TYPE), "org.eclipse.core.databinding.conversion.ConvertString2BooleanPrimitive"); 
			converterMap
					.put(
							new Pair(BOOLEAN_TYPE, "java.lang.Boolean"), new IdentityConverter(Boolean.TYPE, Boolean.class)); 
			converterMap