Better fix.  Make SClass/Module/Class always have at least an implicit nil so we don't have to null check body in IRBuilder
fix for DateTime#jd’ should return chronological Julian day number - #1745
unsplat field in a zsuper in a closure scope was not getting propagated when fixing up the lvar depths.  Temporary fix.
Generalize Argument depth adjustment for supers nested in blocks
Am I high?  I swear this was compiling and finished a test:mri run
[Truffle] Fast path more forms of argument splat.
[Truffle] Fix dynamic name dispatch chain.
[Truffle] Fast path for merging two small hashes.
[Truffle] Fix Hash#merge.
[Truffle] Debug tool to see how an array is stored.
[Truffle] Don't bailout on integer arrays just if we can't actually store them as int[].
[Truffle] Clean up some compilation paths.
[Truffle] Clear paths in Array and String for compilation.
[Truffle] Fix specs.
[Truffle] Clear an array specialisation for compilation.
[Truffle] More fast paths.
Dup'ing BasicObject should TypeError (plus some other incidental checks)
Exclude test for last commit
[Truffle] Fix specs.
fix integration tests of maven artifacts and added ffi gem as default gem