nfs-utils: 2.1.1 -> 2.3.1

nfs-utils: 2.1.1 -> 2.3.1

* Removed 001-configure-Allow-to-explicitly-disable-nfsidmap.patch,
  the nfsidmap is enabled when --enable-nfsv4, so I added a
  PACKAGECONFIG[nfsv4], and default is no since keyutils is not in oe-core by
  default.

* Removed 0001-include-stdint.h-for-UINT16_MAX-definition.patch and
  nfs-utils-1.2.3-sm-notify-res_init.patch since they are already in the
  source.

* Taken two patches from git://git.alpinelinux.org/aports to fix build
  with musl, and the nfs-utils-musl-res_querydomain.patch is for musl only.

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>