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
.put(
							new Pair(BOOLEAN_TYPE, "java.lang.String"), new ToStringConverter(Boolean.TYPE)); 
			converterMap
					.put(
							new Pair(BOOLEAN_TYPE, "java.lang.Object"), new IdentityConverter(Boolean.TYPE, Object.class)); 
			
			converterMap
					.put(
							new Pair("java.lang.String", FLOAT_TYPE), "org.eclipse.core.databinding.conversion.ConvertString2FloatPrimitive"); 
			converterMap
					.put(
							new Pair(FLOAT_TYPE, "java.lang.Float"), new IdentityConverter(Float.TYPE, Float.class)); 
			converterMap
					.put(
							new Pair(FLOAT_TYPE, "java.lang.String"), new ToStringConverter(Float.TYPE)); 
			converterMap
					.put(
							new Pair(FLOAT_TYPE, "java.lang.Object"), new IdentityConverter(Float.TYPE, Object.class)); 		
			
			converterMap
					.put(
							new Pair("java.lang.String", SHORT_TYPE), "org.eclipse.core.databinding.conversion.ConvertString2ShortPrimitive"); 
			converterMap
					.put(
							new Pair(SHORT_TYPE, "java.lang.Short"), new IdentityConverter(Short.TYPE, Short.class)); 
			converterMap
					.put(
							new Pair(SHORT_TYPE, "java.lang.String"), new ToStringConverter(Short.TYPE)); 
			converterMap
					.put(