fix for invalid brace sequence expressions; cosmetic fix to help builtin; documentation and copyright updates; bump version to bash-5.3-rc1; cosmetic locale fixes

include/gettext.h

@@ -1,5 +1,5 @@
 /* Convenience header for conditional use of GNU <libintl.h>.
-   Copyright (C) 1995-1998, 2000-2002, 2008,2009 Free Software Foundation, Inc.
+   Copyright (C) 1995-2025 Free Software Foundation, Inc.
 
    This file is part of GNU Bash, the Bourne-Again SHell.
 

include/posixtime.h

@@ -90,4 +90,12 @@ getnow(void)
   } while (0)
 #endif
 
+#ifndef TIMESPEC_TO_TIMEVAL
+#  define TIMESPEC_TO_TIMEVAL(tv, ts) \
+  do { \
+    (tv)->tv_sec = (ts)->tv_sec; \
+    (tv)->tv_usec = (tv)->tv_nsec / 1000; \
+  } while (0)
+#endif
+
 #endif /* _POSIXTIME_H_ */