--with-sysroot removal is insufficient.
There is bad behaviour somewhere that causes --with-sysroot=no as the
default, and then sysroot to be set to 'no'. In reality, we should have
literally no sysroot; so set --with-sysroot=
This option is erroneous and only worked by chance.
sysroot is prepended to all library search paths when working correctly,
eg, /usr/lib turns into /usr/usr/lib when --with-sysroot=/usr.
- Rather than defining the urls where they are gotten (python sysa,
python sysc, inside sysc), a spec file is now used that is easily
interpretable and tool-independent.
- This is interpreted by rootfs.py and inside sysc.
- This is also used to make sources available and extract sources.
- Manual dirname selection is no longer required as is tarball renaming
upon download - all of this is handled automatically.
Fixes#188
