Include C bindings of Snappy, contributed by Martin Gieseking.
I've made a few changes since Martin's version; mostly style nits, but also
a semantic change -- most functions that return bool in the C++ version now
return an enum, to better match typical C (and zlib) semantics.
I've kept the copyright notice, since Martin is obviously the author here;
he has signed the contributor license agreement, though, so this should not
hinder Google's use in the future.
We'll need to update the libtool version number to match the added interface,
but as of http://www.gnu.org/software/libtool/manual/html_node/Updating-version-
I'm going to wait until public release.
DELTA=238 (233 added, 0 deleted, 5 changed)
Revision created by MOE tool push_codebase.