* guile package: Handling the threads option.
Currently guile by default tries to compile its thread variant.
However, the threaded version can only be compiled if bdw-gc is
compiled with some threads support. Currently, the default
compilation of the bdw garbage collector is compiled without any
thread support resulting in a compilation error.
I have changed the the default guile compilation to the non-threaded
version. I have also added the appropiated options for the bdw-gc
compilation in case the user prefers the threaded variant.
* guile package(flake8): fixed identation issues
15207bae43