patch 8.2.3038: Amiga built-in version string doesn't include build date

Problem:    Amiga built-in version string doesn't include build date.
Solution:   Add the build date if available. (Ola Söder, closes #8437)

src/os_amiga.c

@@ -115,6 +115,9 @@ static char version[] __attribute__((used)) =
     VIM_VERSION_MINOR_STR
 # ifdef PATCHLEVEL
     "." PATCHLEVEL
+# endif
+# ifdef BUILDDATE
+    " (" BUILDDATE ")"
 # endif
     ;
 #endif

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3038,
 /**/
     3037,
 /**/