start integrating EasySandbox, for sandboxing C/C++ programs
start adding support for multiple source files
working on support for building EasySandbox shared library
get rid of carriage returns
Merge branch 'master' of github.com:daveho/CloudCoder
initial code to compile the EasySandbox shared library
refactoring to allow startup and cleanup actions

We'll use this initially to build the EasySandbox shared library
that will be used to sandbox C/C++ submissions.
refactoring to allow global prepare/cleanup steps to run

Currently, they are used to build and cleanup the EasySandbox
shared library.  Seems to work.
cleanup imports
add copyright notice, javadoc comment improvement
ensure that EasySandbox.so is linked with -ldl
update to version 0.5 of daemon library
make sure daemon library is exported
working on enabling sandboxing of C/C++ submissions using EasySandbox
sandboxing works!

Fixed a bug where the EasySandbox shared library would be deleted
as soon as it was created.  Changed it so that it's deleted
when Builder2Daemon's shutdown() method is called.
add copyright/license header
strip the <<entering SECCOMP mode>> output when EasySandbox is enabled
added copyright/license header
EasySandbox config properties for builder
allow build steps to access configuration properties

Used this to allow the builder to honor the EasySandbox config
settings in cloudcoder.properties.

For running the builder interactively, it is hard-coded to
enable EasySandbox.