nettle:upgrade 3.4.1 -> 3.5.1

nettle:upgrade 3.4.1 -> 3.5.1

nettle-stdint.h was no longer use.
Remove nettle/nettle-stdint.h in do_install_append() of .bb file.

Changelog in ChangeLog file as follows:

2019-01-06  Niels Möller  <nisse@lysator.liu.se>

        * nettle-types.h: Don't use nettle-stdint.h, include <stdint.h>
        directly.
        * nettle-write.h: Likewise.
        * configure.ac: Delete use of AX_CREATE_STDINT_H.
        * aclocal.m4 (AX_CREATE_STDINT_H): Delete.
        * Makefile.in (INSTALL_HEADERS, distclean-here): Delete mention of
        nettle-stdint.h.

Signed-off-by: Yuan Chao <yuanc.fnst@cn.fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>