We need to handle `cfg`s in both `rustc` and `rust-analyzer`, and in
future commits some of those contain double quotes, which complicates
things further.
Thus, instead of removing the `--cfg ` part in the rust-analyzer
generation script, have the `*-cfgs` variables contain just the actual
`cfg`, and use that to generate the actual flags in `*-flags`.
Reviewed-by: Alice Ryhl <[email protected]>
Reviewed-by: Gary Guo <[email protected]>
Tested-by: Gary Guo <[email protected]>
Tested-by: Jesung Yang <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Miguel Ojeda <[email protected]>