New function to retrieve ASN1 info on public key algorithms. New command

line option to print out info.

apps/progs.h

@@ -47,6 +47,7 @@ extern int ts_main(int argc,char *argv[]);
 #define FUNC_TYPE_GENERAL	1
 #define FUNC_TYPE_MD		2
 #define FUNC_TYPE_CIPHER	3
+#define FUNC_TYPE_PKEY		4
 
 typedef struct {
 	int type;