Update: allow it to work with 1.1.10

Now, 1.1.9 will upgrade to 1.1.10, but 1.1.10 will act as 1.1.1 and
consider 1.1.9 newer; and not update to 1.1.11...
Of course, this commit is not good at all, but this is the simplest way
I could do it, without breaking everything.

src/misc/update.c

@@ -458,7 +458,7 @@ bool update_NeedUpgrade( update_t *p_update )
     int current_version[] = {
         *PACKAGE_VERSION_MAJOR - '0',
         *PACKAGE_VERSION_MINOR - '0',
-        *PACKAGE_VERSION_REVISION - '0',
+        atoi(PACKAGE_VERSION_REVISION),
         /* extra string of development versions is "-git", "-rc" ..
          * so make sure version a.b.c is newer than a.b.c-XXX */
         (*PACKAGE_VERSION_EXTRA == '-') ? -1 : *PACKAGE_VERSION_EXTRA