README: Add link to JIT site
gccjit.c: Add C API bindings and sample client
gccjit.d: Add D API bindings and sample client
tests: Add a couple more samples
Makefile: Add simple build/clean mechanism
gccjit.d: Start building up documentation
.gitignore: Add
gccjit.c: Update C API bindings
gccjit.d: Add methods to access new API functions