Implementation of the recognition of the required features for Rust for Linux

[MajoraSans]

In the #3210 are listed the required features of the 1.49.0 version of Rust for Rust for Linux,
and this issue is here to give some code to the recognition of these features in the feature-gate,
and the implementation of the errors if these features are used without the attribute.
I will also provide some tests for all of these.