*: make "pragma GCC visibility push(hidden)" less ugly

e2fsprogs/e2fs_lib.h

@@ -9,9 +9,7 @@
 /* Constants and structures */
 #include "e2fs_defs.h"
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility push(hidden)
-#endif
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
 
 /* Iterate a function on each entry of a directory */
 int iterate_on_dir(const char *dir_name,
@@ -46,6 +44,4 @@ extern const char e2attr_flags_sname[];
 #define e2attr_flags_sname_chattr (&e2attr_flags_sname[1])
 #endif
 
-#if __GNUC_PREREQ(4,1)
-# pragma GCC visibility pop
-#endif
+POP_SAVED_FUNCTION_VISIBILITY