[PATCH] maint: update gnulib to latest

[Pádraig Brady]

* gnulib: Update to latest.
* .gitignore: Add a new header to ignore.
* bootstrap.conf: Enable wchar-single, which will enable more
efficient replacements of wcwidth and mbrtowc, as we indicate
that the charset will no change between invocations of these functions.
---
 .gitignore     | 1 +
 bootstrap.conf | 1 +
 gnulib         | 2 +-
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index 63faf89..e162d79 100644
--- a/.gitignore
+++ b/.gitignore
@@ -46,6 +46,7 @@
 /lib/.gitignore
 /lib/alloca.h
 /lib/arpa/inet.h
+/lib/byteswap.h
 /lib/charset.alias
 /lib/config.h
 /lib/config.hin
diff --git a/bootstrap.conf b/bootstrap.conf
index 23b83ab..4da4f94 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -270,6 +270,7 @@ gnulib_modules="
   verify
   verror
   version-etc-fsf
+  wchar-single
   wcswidth
   wcwidth
   winsz-ioctl
diff --git a/gnulib b/gnulib
index 72333a9..71cc633 160000
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit 72333a9c6955aa7ca938dbb5295b78e906c89f07
+Subproject commit 71cc633a0f27a41befb4bf2e18fc7200e38a7157
-- 
2.9.3