[ExecutionEngine] Fix some Clang-tidy modernize-use-default, modernize-use-equals-delete and Include What You Use warnings; other minor fixes.

Differential revision: https://reviews.llvm.org/D26729


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287126 91177308-0d34-0410-b5e6-96231b3b80d8
10 files changed