Made a basic implementation of saving binaries to disk.

.hgignore

src/lib-sieve/sieve-binary.c

src/lib-sieve/sieve-binary.h

src/lib-sieve/sieve-code.c

src/lib-sieve/sieve-extensions.c

src/lib-sieve/sieve-extensions.h

src/lib-sieve/sieve-generator.c

src/lib-sieve/sieve-script.c

src/sieve-bin/Makefile.am

src/sieve-bin/sievec.c

src/sieve-bin/sieved.c