glibc: version bumped to 2.20

Build glibc tools with enhardening to align with the rest of the
1.7.0 ISO.
usbutils: bump to 008
syslinux: bump to 6.03 and still not PSAFE.
less: version bumped to 470.
timezone-data: version bumped to 2014i.
util-linux: version bumped to 2.25.2.
libxml2: version bumpe to 2.9.2.
Merge pull request #721 from Ratler/glibc-2.20

glibc: version bumped to 2.20
Merge pull request #729 from stumbles/usbutils

usbutils: bump to 008
Merge pull request #731 from Florin65/less

less: version bumped to 470.
Merge pull request #732 from Florin65/time

timezone-data: version bumped to 2014i.
Merge pull request #733 from Florin65/util

util-linux: version bumped to 2.25.2.
Merge pull request #734 from Florin65/xml

libxml2: version bumpe to 2.9.2.
wget: version bumped to 1.16.

Security release.
libtool: version bumped to 2.4.3.
dhcpcd: version bumped to 6.6.0.
Merge pull request #738 from Florin65/ftp

wget: version bumped to 1.16.
nasm: vrsion bumped to 2.11.06.
lsof: version bumped to 4.88.
gcc: version bumped to 4.9.2