--disable-shared bootstrap dies building libcc1

[Alan Modra]

On both x86_64-linux and powerpc64-linux, a --disable-shared bootstrap
dies with linker errors when building libcc1.so.  You can't build a
shared library using objects from the static libstdc++ (or any other
library built without -fpic/-fPIC).

OK, so there is a workaround, specify --disable-plugin too, but
shouldn't this be automatic if --disable-shared is given?

-- 
Alan Modra
Australia Development Lab, IBM