algorithm: add nfactor aliases "adaptive-n-factor" and "nscrypt".

Also change whitespace back to "4 spaces".

algorithm.c

@@ -16,10 +16,12 @@ void set_algorithm(algorithm_t* algo, const char* newname) {
     strncpy(algo->name, newname, sizeof(algo->name));
     algo->name[sizeof(algo->name) - 1] = '\0';
 
-    if (strcmp(algo->name, "adaptive-nfactor") == 0) {
-	    set_algorithm_nfactor(algo, 11);
+    if ((strcmp(algo->name, "adaptive-n-factor") == 0) ||
+	(strcmp(algo->name, "adaptive-nfactor")  == 0) ||
+	(strcmp(algo->name, "nscrypt")           == 0) ) {
+	set_algorithm_nfactor(algo, 11);
     } else {
-	    set_algorithm_nfactor(algo, 10);
+	set_algorithm_nfactor(algo, 10);
     }
 
     return;