Handle imagemasks with colorspace by ignoring the colorspace. Also check bits per component.
Handle imagemasks with colorspace by ignoring the colorspace. Also check bits per component.

darcs-hash:20080622222202-86a4e-cdff772382364de4ef87948045d370015f58a720.gz

nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf,nqv/mupdf