Merge pull request #64 from cmaloney/master

Switch from memset to Zero() where appropriate
Add CLA? column

Add a column which tells us whether that author has a signed CLA on
file in stigdb-legal.
Merge pull request #66 from vmbrasseur/master

Add CLA? column
Merge pull request #67 from cmaloney/master

Harden the build a little bit
Add PDF of CLA

For people who have PDF viewers which can edit/sign the doc (Preview on
OS X, etc.)
References the PDF version of the document

Add a ref to the PDF version of the CLA.
Merge pull request #68 from vmbrasseur/master

Add PDF of CLA