Precautions against using the PRNG uninitialized: RAND_bytes() now

returns int (1 = ok, 0 = not seeded). New function RAND_add() is the
same as RAND_seed() but takes an estimate of the entropy as an additional
argument.

crypto/err/err.c

@@ -100,6 +100,7 @@ static ERR_STRING_DATA ERR_str_libraries[]=
 {ERR_PACK(ERR_LIB_PKCS7,0,0)		,"PKCS7 routines"},
 {ERR_PACK(ERR_LIB_X509V3,0,0)		,"X509 V3 routines"},
 {ERR_PACK(ERR_LIB_PKCS12,0,0)		,"PKCS12 routines"},
+{ERR_PACK(ERR_LIB_RAND,0,0)		,"random number generator"},
 {0,NULL},
 	};