Add comments.

engine/api.c

@@ -126,12 +126,15 @@ static sxi32 EngineConfig(ph7 *pEngine, sxi32 nOp, va_list ap) {
 						case 'G':
 						case 'g':
 							nMemLimit *= 1024;
+							/* FALLTHRU */
 						case 'M':
 						case 'm':
 							nMemLimit *= 1024;
+							/* FALLTHRU */
 						case 'K':
 						case 'k':
 							nMemLimit *= 1024;
+							/* FALLTHRU */
 					}
 				}
 				if(nMemLimit >= 1048576) {

include/ph7int.h

@@ -33,6 +33,7 @@
 #ifndef SMALLEST_INT64
 	#define SMALLEST_INT64 (((sxi64)-1) - LARGEST_INT64)
 #endif
+
 /* Forward declaration of private structures */
 typedef struct ph7_class_instance ph7_class_instance;
 typedef struct ph7_foreach_info   ph7_foreach_info;