`contrib/cmake/bootstrap.py` script no longer needs to be executed.
The previous location of the CMake files was a compromise proposed
by @agurfinkel in #461. While this has served us well (allowing progress
to be made) over time limitations of this approach have appeared.
The main problem is that doing many git operations (e.g. pull, rebase)
means the CMake files don't get updated unless the user remembers to
run the script. This can lead to broken and confusing build system
behaviour.
This commit only does the file moving and necessary changes to
`.gitignore`. Other changes will be done in subsequent commits.
is applied to targets. The ``LINK_FLAGS`` property of a target is
a string and not a list and so if ``Z3_DEPENDENT_EXTRA_CXX_LINK_FLAGS``
contained more than one flag the linker line would end up being
``-flag1;flag2;flag3;...`` which would not work. Now we use a new
function ``z3_append_linker_flag_list_to_target()`` to iterate through
the list and update the ``LINK_FLAGS`` property of the specified target
correctly.
