fixed some compilation warnings

src/pacman/add.c

@@ -29,6 +29,7 @@
 #include "list.h"
 #include "download.h"
 #include "trans.h"
+#include "add.h"
 #include "conf.h"
 
 extern config_t *config;

src/pacman/remove.c

@@ -29,6 +29,7 @@
 #include "log.h"
 #include "list.h"
 #include "trans.h"
+#include "remove.h"
 #include "conf.h"
 
 extern config_t *config;

src/pacman/upgrade.c

@@ -27,6 +27,7 @@
 /* pacman */
 #include "list.h"
 #include "add.h"
+#include "upgrade.h"
 #include "conf.h"
 
 extern config_t *config;