-Wall police.
Bump dependencies.
Update 'extra-source-files'.
Merge pull request #121 from 23Skidoo/bump-deps

Bump dependencies.
Merge pull request #122 from 23Skidoo/extra-source-files

Update 'extra-source-files'.
Remove unused files.
Whitespace.
Documentation: 'snap' exe is now provided by 'snap-template'.
Merge pull request #123 from 23Skidoo/snap-exe-cleanup

Remove some unneeded files and update documentation.
Update extra-source-files list. Update README testsuite instructions
tweak build script to find all hpc files