MinGW: Link with windowscodecs library only to use CLSIDs (?)
MinGW: Link with windowscodecs library only to use CLSIDs (?)

Probable fix for #35. It's really strange that we need to link with a
library to just use a constant value (maybe the constant is not
constant and it's just a global variable defined then in the .a).

aseprite/copypaste,aseprite/clip