Update syscall-names.list for Linux 4.18.

This patch updates sysdeps/unix/sysv/linux/syscall-names.list for
Linux 4.18.  The io_pgetevents and rseq syscalls are added to the
kernel on various architectures, so need to be mentioned in this file.

Tested with build-many-glibcs.py.

	* sysdeps/unix/sysv/linux/syscall-names.list: Update kernel
	version to 4.18.
	(io_pgetevents): New syscall.
	(rseq): Likewise.

(cherry picked from commit 17b26500f9bb926d85e86821d014f7c1bb88043c)

diff --git a/ChangeLog b/ChangeLog
index 77aa2a8cf78e568f..3ccca34563e5b71f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2018-08-13  Joseph Myers  <joseph@codesourcery.com>
+
+	* sysdeps/unix/sysv/linux/syscall-names.list: Update kernel
+	version to 4.18.
+	(io_pgetevents): New syscall.
+	(rseq): Likewise.
+
 2018-06-05  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/unix/sysv/linux/syscall-names.list: Update kernel
diff --git a/sysdeps/unix/sysv/linux/syscall-names.list b/sysdeps/unix/sysv/linux/syscall-names.list
index 5306d538e6448163..9982a6334d46ae62 100644
--- a/sysdeps/unix/sysv/linux/syscall-names.list
+++ b/sysdeps/unix/sysv/linux/syscall-names.list
@@ -22,8 +22,8 @@
 # names are only used if the installed kernel headers also provide
 # them.
 
-# The list of system calls is current as of Linux 4.17.
-kernel 4.17
+# The list of system calls is current as of Linux 4.18.
+kernel 4.18
 
 FAST_atomic_update
 FAST_cmpxchg
@@ -186,6 +186,7 @@ inotify_rm_watch
 io_cancel
 io_destroy
 io_getevents
+io_pgetevents
 io_setup
 io_submit
 ioctl
@@ -431,6 +432,7 @@ renameat2
 request_key
 restart_syscall
 rmdir
+rseq
 rt_sigaction
 rt_sigpending
 rt_sigprocmask