Bug 74529 [Encoding] Encoding on properties no longer explains encoding
I200409212000 This is a regression from previous builds (e.g. 3.0): along with the encoding on the properties dialog there was an explanation where it came from, e.g. inherited from container, detected from file content. This important information has gone.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/ide/dialogs/AbstractEncodingFieldEditor.java
/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.FieldEditor#doLoad()
	 */
	protected void doLoad() {
		if (encodingCombo != null) {
			List encodings = IDEEncoding.getIDEEncodings();
			String resourcePreference = getStoredValue();
			populateEncodingsCombo(encodings, resourcePreference);
			updateEncodingState(resourcePreference == null || resourcePreference.equals(defaultEnc));
		}
	}
	/**
	 * Get the value that is current stored for the encoding.
	 * @return String
	 */
	protected abstract String getStoredValue();
	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.FieldEditor#doLoadDefault()
	 */
	protected void doLoadDefault() {
		updateEncodingState(true);
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.FieldEditor#getNumberOfControls()
	 */
	public int getNumberOfControls() {
		return 1;
	}
	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.FieldEditor#isValid()