Rename ExecutionDepsFix files to ExecutionDomainFix

This is the one of multiple patches that fix bugzilla https://bugs.llvm.org/show_bug.cgi?id=33869
Most of the patches are intended at refactoring the existent code.

Additional relevant reviews:
https://reviews.llvm.org/D40330
https://reviews.llvm.org/D40331
https://reviews.llvm.org/D40333
https://reviews.llvm.org/D40334

Differential Revision: https://reviews.llvm.org/D40332

Change-Id: I6a048cca7fdafbfc42fb1bac94343e483befded8
llvm-svn: 323094