re: MKCROSSGDB=yes broken in new gdb?

[matthew green]

FWIW, when i was looking at why my build worked it seems that
the build is thinking it's building against the tools gmp but
the -I path to find it is missing, but -I/usr/pkg/include is
so that for me i'm getting the host gmp.h, but it's linking
the tools libgmp.a.