* Update to rustfmt-preview.
* Run "cargo fmt --all" with rustfmt 0.4.1.
rustfmt 0.4.1 is the latest release of rustfmt-preview available on the
stable channel.
* Fix a long line that rustfmt 0.4.1 can't handle.
* Remove unneeded commas left behind by rustfmt.
* test-no_std: use cargo +nightly
assume folks have rustup set to use stable by default
* cretonne-module, -faerie, -simplejit: use new ModuleError enum
CtonError is not really appropriate for use in the module system.
Instead, create a new enum ModuleError, which implements failure::Fail
(works with no_std). Translate existing panics and unimplemented
error cases to return ModuleErrors.
* cretonne-faerie: export FaerieProduct
* cretonne-module: expose FuncOrDataId, and Module::get_name to lookup
This is helpful for looking up a name that has already been declared.
Also, implement FuncOrDataId -> ExternalName conversion.
* cretonne-faerie: depend on faerie 0.3.0
which has bugfix for data relocations
* cretonne-module: change InvalidDefinition to InvalidImportDefinition
per dan's code review. plus another typo fix
* cretonne-faerie: add optional manifest of all traps from codegen
* cretonne-module: provide more context in panics
* cretonne-faerie: updates to docs
* cretonne-faerie: return an Err instead of debug_assert when isa not pic
