The copyright year "20010" should be "2010"

Hi, @holgern !

I just use the "dmey" in my work recently, and I found a typo error of the copyright year "20010" in some source files, e.g.:

https://github.com/holgern/swt/blob/5a2fae700170a62a89a370a5175abda3d2d53251/src/c/dmey.c#L6

https://github.com/holgern/swt/blob/5a2fae700170a62a89a370a5175abda3d2d53251/src/c/daubechies.c#L6

...

Maybe you want to correct them.

Thanks.