[Sparc] setjmp and longjmp intrinsic support update to add unit tests and...

[Sparc] setjmp and longjmp intrinsic support update to add unit tests and remove accidentally checked-in code.

Related to revision r272782

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@272798 91177308-0d34-0410-b5e6-96231b3b80d8