v0.0.117.0

v0.0.117.0

In addition to the upstream changes in LDK 0.0.117, this release
includes:
 * a substantial change to generated types to use the C type names
   rather than the Rust type names,
 * fixing a few missing "may be NULL or all-0s" tags,
 * and the removal of some excess `#[no_mangle]` tags.
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