Bug 151361 default value for reousrce folder user preference
When user does not sepecify the resourec foler user preference, can we make the current project folder (in IDE) or the current report design file's folder (in RCP) as the default value for the resource folder. This way, by default the current project folder is the resource folder where user can create their libs and images. Also please set the default user preference to be null when BIRT is freshly installed.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/ReportPlugin.java
public void setDefaultCommentPreference( )
	{
		getPreferenceStore( ).setDefault( COMMENT_PREFERENCE,
				Messages.getString( "org.eclipse.birt.report.designer.ui.preference.commenttemplates.defaultcomment" ) ); 
	}
	/**
	 * Return default comment preference
	 * 
	 * @return String The string of default comment preference
	 */
	public String getDefaultCommentPreference( )
	{
		return getPreferenceStore( ).getDefaultString( COMMENT_PREFERENCE );
	}
	/**
	 * Return comment preference
	 * 
	 * @return String The string of comment preference
	 */
	public String getCommentPreference( )
	{
		return getPreferenceStore( ).getString( COMMENT_PREFERENCE );
	}
	/**
	 * set comment preference
	 * 
	 */
	public void setCommentPreference( String preference )
	{
		getPreferenceStore( ).setValue( COMMENT_PREFERENCE, preference );