[Buildroot] [PATCH] glibc: bump version to 2.21

[Vicente Olivert Riera <Vincent.Riera@imgtec.com>]

The following packages have been built with glibc-2.21:

$ cat output/build/build-time.log | awk -F: '{print $4}' | uniq
 host-gawk
 host-binutils
 host-m4
 host-gmp
 host-mpfr
 host-mpc
 host-gcc-initial
 linux-headers
 glibc
 host-gcc-final
 toolchain-buildroot
 toolchain
 attr
 acl
 host-libtool
 host-autoconf
 host-automake
 apr
 host-pkgconf
 expat
 zlib
 openssl
 sqlite
 apr-util
 argp-standalone
 flex
 host-bison
 host-flex
 at
 busybox
 host-ncurses
 ncurses
 readline
 bash
 binutils
 bootutils
 bzip2
 bsdiff
 libcap-ng
 linux-pam
 util-linux
 e2fsprogs
 lzo
 btrfs-progs
 host-gettext
 host-libffi
 host-zlib
 host-libglib2
 libffi
 pcre
 libglib2
 host-gperf
 host-expat
 host-libxml-parser-perl
 host-intltool
 host-python
 python
 xz
 kmod
 host-libcap
 libcap
 systemd
 dbus
 libpcap
 bustle
 ccrypt
 cifs-utils
 gettext
 gmp
 coreutils
 cppunit
 cpuload
 cramfs
 libcurl
 libfuse
 curlftpfs
 cvs
 dash
 dcron
 debianutils
 dialog
 diffutils
 dosfstools
 dtach
 e2tools
 keyutils
 libnspr
 libnss
 ecryptfs-utils
 ed
 host-scons
 exfat-utils
 exfat
 f2fs-tools
 host-file
 file
 findutils
 flashbench
 ftop
 gawk
 genext2fs
 genpart
 genromfs
 getent
 perl
 tcl
 git
 libgpg-error
 libassuan
 libgcrypt
 libksba
 libpthsem
 gnupg2
 nettle
 gnutls
 gperf
 grep
 gzip
 htop
 infozip
 inotify-tools
 libsysfs
 pciutils
 libtool
 libxml2
 libxslt
 lockfile-progs
 popt
 logrotate
 logsurfer
 lua
 lxc
 lz4
 lzip
 lzop
 make
 makedevs
 mmc-utils
 monit
 mtd
 mtools
 nano
 ncdu
 neon
 nfs-utils
 ntfs-3g
 numactl
 nut
 openssh
 patch
 php
 pinentry
 pkgconf
 polkit
 procps-ng
 psmisc
 pwgen
 quota
 rsyslog
 host-ruby
 ruby
 screen
 sed
 smack
 squashfs
 sshfs
 sstrip
 start-stop-daemon
 subversion
 sudo
 sysklogd
 tar
 time
 tmux
 tree
 uemacs
 vim
 which
 xfsprogs
 xmlstarlet
 zsh
 host-fakeroot
 host-makedevs
 host-mkpasswd


--
Vincent