Also adapted the fetch rules to correctly generate the gitignore
files for gcc, and allow the case of multiple modules in the same
directory, as found in gnu/dist.
Warning: This patch has an entry in docs/UPDATING
Change-Id: Ib781734e8fd7f9c6265fa65d62ba2cf3fccbc5ba
They are used as build tools for cross compilation. This import does
not include the full distribution. Rather, it sports a shell script
that will download and patch the distribution when compiled from
/usr/src/tools (yet to be committed). This part of the source tree is
only necessary for cross compilation. It's not used or compiled for
native builds.
