zmqpp: fix license information

Commit 85d28790cdbaa68179632aca7e5708fead7614f0 bumped the zmqpp Git
snapshot to 30d72d95f2cfdf9c5cedfd56747f549d65e65847.

However, the zmqpp licensing has changed (from MIT to
"LGPLv3+ with exceptions"), and the license file names have changed.

Fixes autobuild failures such as the following.

  http://autobuild.buildroot.net/results/a60/a6029fcb670cd27687a68cb96f0f14f5c13caf47

Signed-off-by: Simon Dawson <spdawson@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
squid: bump to version 3.4.2

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
iftop: bump to version 1.0pre3

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
grep: bump to version 2.16

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
manual: use current date/time for 'generated on'

Currently, the manual uses the last modification date and time of
manual.txt in the generated manual.

This is confusing, especially for long-checked-out repositories where
the top-level manual.txt has not changed since the check out. Moreover,
the manual explicitly states 'generated on', which is confusing at best.

Use the current date and time instead.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Samuel Martin <s.martin49@gmail.com>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>