Ebb calls made from linux application.

Context must be 'Activated' to enable ebb calls. On ulnx, we no longer call in
app::start by default.
Merge pull request #49 from jmcddn/forSESA

Ebb calls made from linux application.
Add LibFox apps
Implement enough for mcphoton
Fix buf in libfox implementation

mcphoton now works
Remove app start in LibFox app
Merge pull request #50 from dschatzberg/forSESA

Add LibFox apps
Update libfox.cpp

fix: file was being included that does not exist in this commit
Update HelloRemote.cpp

fix: missing `ebbrt` namespace context
Add MPI MessageManager

This message manager allows us to write distributed CNK apps
Merge pull request #51 from dschatzberg/forSESA

Add MPI MessageManager
header defines macroes for early symbols
ifdefed out configration changes