Log Message:
logswan: update to 1.07. Add simple smoketest.

Changes since 1.06:
    Harmonize arrays names
    Remove array of months, it's currently unused and will likely remain so
    Simplify internal JSON array and object names
    Use OpenBSD style(9) for function prototypes and declarations
    Revert back to using strtok, at least for now
    Do not use EXIT_SUCCESS and EXIT_FAILURE macros anymore
    Fix implicit function declaration rrror on NetBSD (Thanks Maya Rashish)
    Remove now useless variables initialization and unnecessary includes
    Do not add an extra new line when displaying usage or version