Bug 181569 Inconsistent constant values for SortType defintion
In rom.def, the allowed values for SortType is "sort-on-group-key" and "complex-sort", but in DesignChoiceConstants, it's "sortOnGroupkey" and "complexSort". These values should be consistent.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/elements/DesignChoiceConstants.java
public static final String CHOICE_JOIN_TYPE = "joinType"; 
	public static final String JOIN_TYPE_INNER = "inner"; 
	public static final String JOIN_TYPE_LEFT_OUT = "left-out"; 
	public static final String JOIN_TYPE_RIGHT_OUT = "right-out"; 
	public static final String JOIN_TYPE_FULL_OUT = "full-out"; 
	/**
	 * joinOperator -- join operator of join condition.
	 */
	public static final String CHOICE_JOIN_OPERATOR = "joinOperator"; 
	public static final String JOIN_OPERATOR_EQALS = "eq"; 
	/**
	 * actionTargetFileType -- target type of the linked file
	 */
	public static final String CHOICE_ACTION_TARGET_FILE_TYPE = "actionTargetFileType"; 
	public static final String ACTION_TARGET_FILE_TYPE_REPORT_DESIGN = "report-design"; 
	public static final String ACTION_TARGET_FILE_TYPE_REPORT_DOCUMENT = "report-document"; 
	/**
	 * actionBookmarkType -- target bookmark type
	 */
	public static final String CHOICE_ACTION_BOOKMARK_TYPE = "actionBookmarkType"; 
	public static final String ACTION_BOOKMARK_TYPE_BOOKMARK = "bookmark"; 
	public static final String ACTION_BOOKMARK_TYPE_TOC = "toc"; 
	/**
	 * autotextType -- type of auto text
	 */
	public static final String CHOICE_AUTO_TEXT_TYPE = "autoTextType"; 
	public static final String AUTO_TEXT_PAGE_NUMBER = "page-number"; 
	public static final String AUTO_TEXT_TOTAL_PAGE = "total-page"; 
	/**
	 * dataSetMode -- the mode to support data sets. Can be single data set and