Kill some remaining references to SVR4 and univel.

Both terms still appear in a few places, but I thought it best to leave
those alone in context.

src/backend/utils/misc/ps_status.c

@@ -66,7 +66,7 @@ bool		update_process_title = true;
 #define PS_USE_PS_STRINGS
 #elif (defined(BSD) || defined(__bsdi__) || defined(__hurd__)) && !defined(__darwin__)
 #define PS_USE_CHANGE_ARGV
-#elif defined(__linux__) || defined(_AIX) || defined(__sgi) || (defined(sun) && !defined(BSD)) || defined(ultrix) || defined(__ksr__) || defined(__osf__) || defined(__svr4__) || defined(__svr5__) || defined(__darwin__)
+#elif defined(__linux__) || defined(_AIX) || defined(__sgi) || (defined(sun) && !defined(BSD)) || defined(ultrix) || defined(__ksr__) || defined(__osf__) || defined(__svr5__) || defined(__darwin__)
 #define PS_USE_CLOBBER_ARGV
 #elif defined(WIN32)
 #define PS_USE_WIN32
@@ -76,7 +76,7 @@ bool		update_process_title = true;
 
 
 /* Different systems want the buffer padded differently */
-#if defined(_AIX) || defined(__linux__) || defined(__svr4__) || defined(__darwin__)
+#if defined(_AIX) || defined(__linux__) || defined(__darwin__)
 #define PS_PADDING '\0'
 #else
 #define PS_PADDING ' '

src/port/getrusage.c

@@ -18,11 +18,9 @@
 #include "rusagestub.h"
 
 /* This code works on:
- *		univel
- *		solaris_i386
  *		sco
+ *		solaris_i386
  *		solaris_sparc
- *		svr4
  *		hpux 9.*
  *		win32
  * which currently is all the supported platforms that don't have a