Sync Makefile.in with sampleextension's. Cleanup the generation
of the object file and executable
Merge pull request #6 from gahr/cleanup-autostuff

Sync Makefile.in with sampleextension's.
Fix INSTALL_DATA_DIR
Merge pull request #7 from gahr/cleanup-autostuff

Fix INSTALL_DATA_DIR
Update copyright year in the manpage and regenerate.