install-local: Make file search case-insensitive

Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com>
install-local: Use a Bash-builtin string function instead of "basename"

Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com>
Add a simple script to determine package dependencies for given files

Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com>