[robovero] split packages for robovero-examples

Now building robovero and robovero-examples packages
[robovero] Install example scripts into /usr/share

The example scripts are now installed in /usr/share/robovero-python
directory. The /usr/share directory is also where VIM installs its
tutorial files.
[packagegroup] Added robovero to Gumstix package group

Added robovero and robovero-examples to the package group.
Also alphabetically sorted the package list.
[robovero] explicitly naming the split packages

The naming of the recipe file seems to conflict with the package names.
For instance, "robovero-python_0.1.bb" only produces robovero-python RPM
package, and not robovero-examples package.
[robovero] Add pyserial as the runtime dep of robovero-python
[mavlink-socket] Add mavlink-socket application

This application exposes a mavlink connection from a serial port with a
UDP socket.  It is useful for controlling a Gumstix AeroCore board from
a DuoVero board.  Credit goes to Andrew Smith [1] for putting this
recipe together.

[1] https://github.com/smithandrewc/meta-stanfordARL

Signed-off-by: Ash Charles <ashcharles@gmail.com>
Correct typo in ROOTFS_POSTPROCESS_COMMAND

There must be a semi-colon after each command to ensure each gets
individually executed.

Signed-off-by: Ash Charles <ashcharles@gmail.com>