defenv-2 menu: when booting failed wait for key press ...

When booting fails we will be immediately be back into the menu,
so the error message can't be seen. Also, boot in verbose mode
since in interactive mode the last bit of performance is not that
necessary.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

defenv-2: bring back /env/config ...

The idea of having /env/init/* scripts was to make the configuration
more flexible and customizable for boards. It turned out though that
people (including myself) do not find the place where they should
change these settings.

So this patch brings back /env/config for defenv-2. The individual
env/init/* scripts are removed and their content is added to
/env/init/config-board. This makes the values from /env/init/config-board
the board specific defaults which can be overwritten in /env/config.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

defaultenv-2/ansi-colors: export color only if enable ...

This will allow to do not check it everywhere

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Add next generation default environment template ...

This adds a new environment template which aims to be more flexible
and configurable. Instead of having mainly two scripts (a config script
and a boot script) this template uses initscripts which control the
startup behaviour and configuration. Also we have boot scripts in
/env/boot which configure a single boot configuration. Additional
boot entries can be added by board specific entries or during runtime
by copying and editing a template entry.

Some more helpers handle for example network interfaces which can now
be brought up with 'ifup'. We use the automount feature to configure
mountpoints together with the commands to bring up the devices behind
these mountpoints.

Optionally menu support is available which hides many details behind
a nice looking interface.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>