Error codes for signature functions:

Detailed Description

See calc_idasgn_state() and del_idasgn()

Macros
#define	IDASGN_OK   0
	ok
#define	IDASGN_BADARG   1
	bad number of signature
#define	IDASGN_APPLIED   2
	signature is already applied
#define	IDASGN_CURRENT   3
	signature is currently being applied
#define	IDASGN_PLANNED   4
	signature is planned to be applied