solana_rbpf v0.3.0

Bump to Rust v1.46

Rust-BPF v0.2.5

• Remove dependency on dynamic OpenSSL libs
• Verified the MacOS tools run on a clean machine

Rust-BPF v0.2.4

• Pulls in the latest llvm-project changes which include an unaligned memory movement optimization

Rust-BPF v0.2.3

• Allow unstable compiler options in order to maintain interoperability between different Cargo versions

Rust-BPF v0.2.2

• Release a matched version of cargo along with rustc

Rust-BPF v0.2.1

• Bump stack frame size up to 4k
• Align stack frame arguments

Rust-BPF v0.2.0

• Update to Rust 1.39

Rust-BPF v0.1.8

• Add --json option to rustc, required by recent versions of Cargo

Rust-BPF v0.1.7

• Rust's libstd unfortunately requires LLVM targets to support atomic compare and swap (cas). Indicate in the BPF target spec that cas is supported even though it isn't. Clean's up a bunch of workarounds in libstd but requires us to implement atomics directly in libstd.

Rust-BPF v0.1.6

Change the RUST BPF target spec to use "unknown" instead of "Linux"