Remove a bunch of generated files
Add Cisco copyrights
bootstrap.sh: update to use autoreconf to do all the Right steps
src/Makefile.am: Remove CXXFLAGS (there's no C++ sources)
configure.ac: updates for modern Autotools

- Use single-arg form of AM_INIT_AUTOTOOL
- Use AM_PROG_AR, if it exists
- Use AM_SILENT_RULES, if it exists
.gitignore: Ignore generated files
test/Makefile.am: use $(top_srcdir) so that VPATH builds work
test/Makefile.am: ensure test is relinked if libfnr.a changes

Also use $(top_builddir) to be pedantically correct about relative
directories.
test/generate_ipv4.py: make script executable
test/Makefile.am: Ensure generate_ipv4.py is included in tarball
fnr.c: Add missing header file for ERR_print_errors_fp()
fnr.c: Add missing header file for OPENSSL_config()
fnr.c: Avoid a warning about changing signedness
fnr.c: Save the malloc size (in bytes) so we can accurately memset it later
fnr.c: cast away some sign warnings

I'm not 100% sure of this patch; please verify before using.
fnr.c: Use calloc/memcpy instead of malloc/strcpy to avoid signed issues