Removal of unused gcc 4.4 sources and makefiles It's been confirmed that a gcc50-built world and kernel boots and functions as expected. With that good news, it is safe to remove the gcc 4.4 sources and makefiles. It wasn't building and this will make the cloning of a shallow repo faster.
gcc44: import build infrastructure This is based on the gcc41 infrastructure, but heavily modified and streamlined. Where possible, whole chunks of the original gcc Makefiles were copied. gcc44 now needs gmp and mpfr, so add their infrastructure as well. They are built as internal (static) libs.