After the previous commit removed symlinks from git (they break Windows
clones), a fresh Linux clone or git checkout would leave the bundle
directories without the POSIX symlinks that the GNU make build needs.
Add _ensure_bundle_symlinks() to build_plugin_linux.py: before the first
make invocation for a bundle-based version it checks whether the bundle
root symlink (bundle/C -> ../VER/C) exists and, if not, runs
setup_bundle_symlinks.py automatically so the developer never has to
run the setup script manually.
Simone
8a76f8cc70