unix: add additional rlimit resource constants

Add the following additional Getrlimit/Setrlimit resource constants (see
http://man7.org/linux/man-pages/man2/getrlimit.2.html):

  RLIMIT_LOCKS
  RLIMIT_MEMLOCK
  RLIMIT_MSGQUEUE
  RLIMIT_NICE
  RLIMIT_NPROC
  RLIMIT_RSS
  RLIMIT_RTPRIO
  RLIMIT_RTTIME
  RLIMIT_SIGPENDING

Fixes golang/go#14854

Change-Id: I302ff67d6d1b11d94f18614490fbd634a8caec19
Reviewed-on: https://go-review.googlesource.com/45052
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
diff --git a/unix/zerrors_linux_386.go b/unix/zerrors_linux_386.go
index b536f67..5a9e559 100644
--- a/unix/zerrors_linux_386.go
+++ b/unix/zerrors_linux_386.go
@@ -1219,7 +1219,16 @@
 	RLIMIT_CPU                           = 0x0
 	RLIMIT_DATA                          = 0x2
 	RLIMIT_FSIZE                         = 0x1
+	RLIMIT_LOCKS                         = 0xa
+	RLIMIT_MEMLOCK                       = 0x8
+	RLIMIT_MSGQUEUE                      = 0xc
+	RLIMIT_NICE                          = 0xd
 	RLIMIT_NOFILE                        = 0x7
+	RLIMIT_NPROC                         = 0x6
+	RLIMIT_RSS                           = 0x5
+	RLIMIT_RTPRIO                        = 0xe
+	RLIMIT_RTTIME                        = 0xf
+	RLIMIT_SIGPENDING                    = 0xb
 	RLIMIT_STACK                         = 0x3
 	RLIM_INFINITY                        = -0x1
 	RTAX_ADVMSS                          = 0x8