Move the execution code from Compilation::ExecuteCommand to Command::Execute
I think it makes sense that a Command knows how to execute itself.
There's no functionality change but i rewrote the code to avoid the manual
memory management of Argv.
My motivation for this is that I plan to subclass Command to build fall-back
functionality into clang-cl.
Differential Revision: http://llvm-reviews.chandlerc.com/D1654
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190621 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed