[CF 6013] Add process updating for GNU/Hurd

This branch was automatically generated by a robot using patches from an
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https://commitfest.postgresql.org/patch/6013

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Patch(es): https://www.postgresql.org/message-id/[email protected]
Author(s): Michael Banck

Author: Commitfest Bot

src/backend/utils/misc/ps_status.c

@@ -52,7 +52,7 @@ bool		update_process_title = DEFAULT_UPDATE_PROCESS_TITLE;
 #define PS_USE_SETPROCTITLE_FAST
 #elif defined(HAVE_SETPROCTITLE)
 #define PS_USE_SETPROCTITLE
-#elif defined(__linux__) || defined(__sun) || defined(__darwin__)
+#elif defined(__linux__) || defined(__sun) || defined(__darwin__) || defined(__GNU__)
 #define PS_USE_CLOBBER_ARGV
 #elif defined(WIN32)
 #define PS_USE_WIN32
@@ -62,7 +62,7 @@ bool		update_process_title = DEFAULT_UPDATE_PROCESS_TITLE;
 
 
 /* Different systems want the buffer padded differently */
-#if defined(__linux__) || defined(__darwin__)
+#if defined(__linux__) || defined(__darwin__) || defined(__GNU__)
 #define PS_PADDING '\0'
 #else
 #define PS_PADDING ' '