Dev 0.7.2 (#7)

* Added example scripts for qemu installation/running.

* Update README.md

* Create README.md

Some basic how-to

Patch version 0.7.1 (#6)

* Made test more meaningful. Update version number

* Fix issue with GDB-python not using virtual environment

- The problem is that GDB's python does not use the path from the
virtual environment. However, sys.path is populated in part by
$PYTHONPATH. So, by passing on sys.path into $PYTHONPATH before invoking
GDB, we can auto-populate sys.path to point GDB to the virtual
environment.

* Solve some packaging issues with python2 in gem5.

- Testing this in a clean VM is very helpful.

Development Version 0.7 (#5)

* Fixed various issues with proper, out-of-source installation

* Turns out, rather than using a custom action, we can use just the type
if we have a single argument constructor (essentially a type cast)

Dev 0.6 (#4)

* Fix config argument bug

* Fix packaging error that was only allowing lapidary to be run from the
directory itself. Now can be installed via pip.

* Cleaning up the checkpointing engine as I start working on keyframes.

- Adding some documentation (docstrings)
- Converting random print statements into log messages using the logger
modules.
- Also moved the LICENSE to the proper place in the directory hierarchy
so that it shows up on github.

* Fix bug in Spec17 plugin that wasn't allowing for customizable spec
locations.

- Spec2017Bench now overrides the SPEC17_ROOT variable in the makefile,
allowing spec to now build properly.
- Added a bit more documentation.

* Fixed the bug with early-termination in GDB

- It wasn't actually an issue with the signal handler like I thought. It
was actually that I wasn't catching a GDB error from parsing the "show
language" command. It is now fixed.
- Some other minor tweaks.

* Legacy bug cleanup.

Before we can merge 0.6, we need to do the following things:
- Get single simulate and parallel simulate working again (currently I
need to test after rebuilding gem5).
- Get keyframes fully implemented, which will dramatically increase
usability.

* Fixed single simulate

- Parallel still terminates early for some reason

* Parallel simulate is working again!

- Need to clean up the stdout/stderr interweaving.
- Should also clean up some of the logging infra

* Fixed stdout/stderr redirection

Tips and tricks:
- stdout/stderr should be in text mode (at least for python2.7, I think)
- need to seek to 0 to print
- can't use io.StringIO because python expects fileno() to be
implemented on stdout/stderr

* A bit of clean-up

* Add some keyframes scaffolding.