Add module prefix to fluent strings

Author: gabrielbusta

compiler/rustc_error_messages/locales/en-US/trait_selection.ftl

@@ -1,17 +1,17 @@
-dump_vtable_entries = vtable entries for `{$trait_ref}`: {$entries}
+trait_selection_dump_vtable_entries = vtable entries for `{$trait_ref}`: {$entries}
 
-unable_to_construct_constant_value = unable to construct a constant value for the unevaluated constant {$unevaluated}
+trait_selection_unable_to_construct_constant_value = unable to construct a constant value for the unevaluated constant {$unevaluated}
 
-auto_deref_reached_recursion_limit = reached the recursion limit while auto-dereferencing `{$ty}`
+trait_selection_auto_deref_reached_recursion_limit = reached the recursion limit while auto-dereferencing `{$ty}`
     .label = deref recursion limit reached
     .help = consider increasing the recursion limit by adding a `#![recursion_limit = "{$suggested_limit}"]` attribute to your crate (`{$crate_name}`)
 
-empty_on_clause_in_rustc_on_unimplemented = empty `on`-clause in `#[rustc_on_unimplemented]`
+trait_selection_empty_on_clause_in_rustc_on_unimplemented = empty `on`-clause in `#[rustc_on_unimplemented]`
     .label = empty on-clause here
 
-invalid_on_clause_in_rustc_on_unimplemented = invalid `on`-clause in `#[rustc_on_unimplemented]`
+trait_selection_invalid_on_clause_in_rustc_on_unimplemented = invalid `on`-clause in `#[rustc_on_unimplemented]`
     .label = invalid on-clause here
 
-no_value_in_rustc_on_unimplemented = this attribute must have a valid value
+trait_selection_no_value_in_rustc_on_unimplemented = this attribute must have a valid value
     .label = expected value here
     .note = eg `#[rustc_on_unimplemented(message="foo")]`