Introduce secp256k1_scalar_t for future constant-time mod order operations

src/ecmult_gen.h

@@ -5,13 +5,13 @@
 #ifndef _SECP256K1_ECMULT_GEN_
 #define _SECP256K1_ECMULT_GEN_
 
-#include "num.h"
+#include "scalar.h"
 #include "group.h"
 
 static void secp256k1_ecmult_gen_start(void);
 static void secp256k1_ecmult_gen_stop(void);
 
 /** Multiply with the generator: R = a*G */
-static void secp256k1_ecmult_gen(secp256k1_gej_t *r, const secp256k1_num_t *a);
+static void secp256k1_ecmult_gen(secp256k1_gej_t *r, const secp256k1_scalar_t *a);
 
 #endif