Annotate deprecated C++ APIs

A `BN_DEPRECATED` macro is introduced that expands to a `[[deprecated(msg)]]`
attribute. Using functions that are annotated as deprecated will
generate a compiler warning. This should help make users aware that they
should migrate to replacement APIs.

Annotate deprecated C++ APIs

A `BN_DEPRECATED` macro is introduced that expands to a `[[deprecated(msg)]]`
attribute. Using functions that are annotated as deprecated will
generate a compiler warning. This should help make users aware that they
should migrate to replacement APIs.

Annotate deprecated C++ APIs

A `BN_DEPRECATED` macro is introduced that expands to a `[[deprecated(msg)]]`
attribute. Using functions that are annotated as deprecated will
generate a compiler warning. This should help make users aware that they
should migrate to replacement APIs.

Annotate deprecated C++ APIs

A `BN_DEPRECATED` macro is introduced that expands to a `[[deprecated(msg)]]`
attribute. Using functions that are annotated as deprecated will
generate a compiler warning. This should help make users aware that they
should migrate to replacement APIs.

Annotate deprecated C++ APIs

A `BN_DEPRECATED` macro is introduced that expands to a `[[deprecated(msg)]]`
attribute. Using functions that are annotated as deprecated will
generate a compiler warning. This should help make users aware that they
should migrate to replacement APIs.

Update function recognizer to detect ILP32 plt entries

Update function recognizer to detect ILP32 plt entries

Update function recognizer to detect ILP32 plt entries

Improve filename handling for container files.

[Rust] Update allowed licenses