This also:

* Adds PKG_SOURCE_DATE and PKG_SOURCE_VERSION to PKG_VERSION (by
  default, when PKG_VERSION is defined, PKG_SOURCE_DATE and
  PKG_SOURCE_VERSION are not used)

* Fixes package copyright

Signed-off-by: Jeffery To <jeffery.to@gmail.com>
(cherry picked from commit 2dd1c17626)

Few minor changes, like -h flag for program (help).
Added URL to package definition.

No new version release with version number, so version stays
as is, but pkg_release is still bumbed with this commit.

Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>
(cherry picked from commit 8f66090160)

Signed-off-by: Oskari Rauta <oskari.rauta@gmail.com>