Add some documentation stating that the memory allocated by the ASTContext.h placement new does not need to be explicitly freed
Add some documentation stating that the memory allocated by the ASTContext.h placement new does not need to be explicitly freed

Reviewers: rnk

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D5392

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@218232 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang