1.83 adjustments

Cargo.toml

@@ -40,7 +40,7 @@ cc = { optional = true, version = "1.0" }
 panic-handler = { path = 'crates/panic-handler' }
 
 [features]
-default = ["compiler-builtins", "no-f16-f128"]
+default = ["compiler-builtins"]
 
 # Enable compilation of C code in compiler-rt, filling in some more optimized
 # implementations and also filling in unimplemented intrinsics
@@ -83,3 +83,6 @@ panic = 'abort'
 
 [profile.dev]
 panic = 'abort'
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = ['cfg(target_family, values("solana"))', 'cfg(target_feature, values("static-syscalls"))', 'cfg(target_os, values("solana"))'] }