patch 8.0.1506: new version of HP NonStop (Tandem) doesn't like a header

Problem:    New version of HP NonStop (Tandem) doesn't like the default header
            for setenv().
Solution:   Put a #ifdef around the setenv() entry. (Joachim Schmitz)

src/osdef2.h.in

@@ -8,7 +8,11 @@ extern int	free(char *);
 extern char	*malloc(unsigned int);
 extern char	*realloc(char *, int);
 extern char	*getenv(char *);
+#ifndef __TANDEM
 extern int	setenv(char *, char *, int);
+#else
+extern int	setenv(const char *, const char *, int);
+#endif
 extern int	putenv(const char *);
 
 #ifndef __TANDEM

src/version.c

@@ -771,6 +771,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1506,
 /**/
     1505,
 /**/