[modules] Combine Pass.h, PassSupport.h and PassAnalysisSupport.h into one module.
[modules] Combine Pass.h, PassSupport.h and PassAnalysisSupport.h into one module.

The header files are designed to be used always together (through Pass.h).

Addresses the first part of https://llvm.org/bugs/show_bug.cgi?id=27991

Patch by Cristina Cristescu and me.

Reviewed by Richard Smith.


git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@272877 91177308-0d34-0410-b5e6-96231b3b80d8

GPUOpen-Drivers/llvm,apple/swift-llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,llvm-mirror/llvm,llvm-mirror/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,llvm-mirror/llvm,apple/swift-llvm,llvm-mirror/llvm,apple/swift-llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm