re bug 638959: gmp multiarch support - why not -dev too?

[Wookey]

I just noticed that
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=638959 was closed but
only libgmp10 libgmpxx4ldbl were made Multi-Arch: same. The -dev part
of the patch was missed out. 

What was the reason for this?

libgmp-dev is a build-dep of 75 packages, and because the build-arch
version gets installed with the toolchain it is often not possible to
install the host-arch version unless libgmp-dev is M-A: same. 

I'm not aware of any reason why this shouldn't be done now, but
haven't done a lot of builds to check. 

Should I open a new bug about this - or re-open that one?

Wookey