rust: release v0.3.3

Bump the version of the Rust crates to release FreeBSD support.
# Please enter the commit message for your changes. Lines starting
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# On branch release-0.3.3
# Changes to be committed:
#	modified:   rust/CHANGELOG.md
#	modified:   rust/ittapi-sys/Cargo.toml
#	modified:   rust/ittapi-sys/README.md
#	modified:   rust/ittapi/Cargo.toml
#	modified:   rust/ittapi/README.md
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