[fluxus] blending bugs.

[Alex]

These look like an easy fix:

libfluxus/src/State.cpp
line 91 should probably be:
else cerr<<"dest blend mode not recognised"<<endl;
(it was saying source)

src/FluxusBindings.cpp
line 549 looks like it should be:
  char *d=gh_scm2newstr(s_d,&size);
was:
char *d=gh_scm2newstr(s_s,&size);

(ie only the source was being used i think)

-Alex