Indeed the package could theoretically be marked Multi-Arch: same, but
this would serve no useful purpose, since octave itself is not
multiarch co-installable. So let’s ignore this.
* Build log checks report 1 warning [severity "low"] ->
dpkg-buildflags-missing LDFLAGS
It seems that the warning only concern two minor architectures (m68k,
kfreebsd-i386), so it’s also ok to ignore this.
I have uploaded the package, thanks. I just had to modify the
changelog, because it said that July 7 was a Thursday, while it is
actually a Friday (lintian complained). I don’t really know how you got
this messed up :)