Usage of language specific profiles in build dependencies

[Matthias Klose <doko@debian.org>]

Please see https://bugs.debian.org/982085

I think it's wrong to encode build dependencies for language stacks that are not
available on some platforms, just using a profile.

Seen in gettext:

  default-jdk <!nojava>, maven-repo-helper <!nojava>

and also in db5.3.

A more cooperative usage of such build dependencies can be seen in brltty
collectd gdcm liblouisutdml link-grammar octave opencv openmpi r-base rjava
swi-prolog ucx vtk7 vtk9 z3 and probably other packages.

These dependencies should look like:

  default-jdk [!hppa !hurd-i386 !kfreebsd-any]

or

  default-jdk [alpha amd64 arm64 armel armhf i386 ia64 m68k mips64el mipsel
powerpc ppc64 ppc64el riscv64 s390x sh4 sparc64 x32]

It's also ok to use something like

  default-jdk [!hppa !hurd-i386 !kfreebsd-any] <!nojava>

to be able to build with the nojava profile.  I also see this used in many mono
related build dependencies.

Having such build dependencies in a package that is a required package for
almost everything isn't helpful.

Matthias