Simplification of Conditional Compilation Attributes

[turbofish-pk]

There are instances where there is room for code improvement.

The below two examples are in their original form very difficult to understand and one must check twice to know what they actually mean.

Example 1

Original

    #[cfg(all(
        target_arch = "wasm32",
        feature = "wasmbind",
        not(any(target_os = "emscripten", target_os = "wasi", target_os = "linux"))
    ))]

Simplified

#[cfg(all(
    target_arch = "wasm32",
    feature = "wasmbind",
    not(target_os = "emscripten"),
    not(target_os = "wasi"),
    not(target_os = "linux"),
))]

Example 2

Original

#[cfg(all(
    feature = "now",
    not(all(
        target_arch = "wasm32",
        feature = "wasmbind",
        not(any(target_os = "emscripten", target_os = "wasi", target_os = "linux"))
    ))
))] 

Simplified

#[cfg(all(
    feature = "now",
    any(
        not(target_arch = "wasm32"),
        not(feature = "wasmbind"),
        target_os = "emscripten",
        target_os = "wasi",
        target_os = "linux",
    )
))]

If you agree with this change, but don't have resources to implement it, then I will be happy to make those changes and submit a pr.