vmem: implementation of vmem_freespace()
Merge pull request #8 from spawlows/implement-vmem_freespace

vmem: implementation of vmem_freespace()
common: scripts for building rpm and dpkg packages

- Add scripts for building rpm and dpkg packages
- Update Makefiles to fulfill Debian policy
- Update README file
- Add initial ChangeLog file
- Create .version file containing version tag outside git repo