gdsfmt_v1.0.5

	* fix memory leaks in 'cleanup.gds'
	* add a new function 'is.element.gdsn'
	* add a new function 'gdsCFuncList'
	* add a global variable '.gds.machine' with logical processor
information
	* allow closing GDS files in 'showfile.gds'
	* modify CoreDEF.h