Framework for top level executive.
New executive launch node, and corresponding Cmake
Modified launch file for new executive
Executive CMake executes python setup now.
Moved executive_master.py into proper package path
Added gitignore to executive package.
Removed unnecessary ROS build includes
Modified launch and node for new package structure
Added init file for python package magic
Test launch file for executive state machine only.
Executive sub-machine state files.

These files include all the states and additional code for the
state machines that run inside of the master executive.
Merge branch 'master' into smach_executive
Installed smach_viewer from groovy.  Hideous.
Added smach state to monitor ROS topics.

One can add any number of potential topic values, and corresponding
smach.State outcomes to the constructor.  The state will then
transition with the specified outcome when it receives the topic value.
Camlogger now publishes search camera status.
Added search camera status to remaps.
Removed unused ManipulatorGrab action message.
Added timeout, removed extra debug statements.
Changed maintainer from Zoe to Brandon.
Created general ROS msg package for Sample Return.

Messages and services that do not fit in a specific package
should be put here.