Clean up <inttypes.h> header inclusions

In both cases we can go with the slightly leaner <stdint.h> header
include since we aren't using the print macros.

Signed-off-by: Dan McGee <dan@archlinux.org>

lib/libalpm/add.c

@@ -26,8 +26,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
-#include <inttypes.h> /* int64_t */
-#include <stdint.h> /* intmax_t */
+#include <stdint.h> /* int64_t */
 
 /* libarchive */
 #include <archive.h>

lib/libalpm/alpm.h

@@ -27,7 +27,7 @@
 extern "C" {
 #endif
 
-#include <inttypes.h>  /* int64_t */
+#include <stdint.h>    /* int64_t */
 #include <sys/types.h> /* off_t */
 #include <stdarg.h>    /* va_list */