Silence a -Wnonnull warning
Fix systime to print the right month value
Add compiler-generated Makefile dependencies
Mac build fix from Win32 port
Merge pull request #11 from luser/minor-fixup

Minor fixup
Merge pull request #12 from luser/build-deps

Add compiler-generated Makefile dependencies
Merge pull request #13 from luser/mac-fixup

Mac build fix from Win32 port