Fixed clean rule in Makefile
Fixed clean rule in Makefile

clean rule didn't erase the kcc binary, the most important task of the clean
target.

8l/scc,k0gaMSX/kcc,8l/scc,k0gaMSX/scc,8l/scc,k0gaMSX/scc,k0gaMSX/kcc,k0gaMSX/scc