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
}
					}
				}
			}
		}
		return reportExtensionNames;
	}
	/**
	 * Checks if the file is a report design file by its file name
	 * 
	 * @return true if the extension name of the file can be recognized as a
	 *         report design file, or false otherwise.
	 */
	public boolean isReportDesignFile( String filename )
	{
		if ( filename != null )
		{
			for ( Iterator iter = ReportPlugin.getDefault( )
					.getReportExtensionNameList( )
					.iterator( ); iter.hasNext( ); )
			{
				if ( filename.endsWith( "." + (String) iter.next( ) ) ) 
				{
					return true;
				}
			}
		}
		return false;
	}
}