Merge #10602: Make clang-format use C++11 features (e.g. A<A<int>> instead of A<A<int> >)

131a8ce Make clang-format use C++11 features (e.g. A<A<int>> instead of A<A<int> >) (practicalswift)

Tree-SHA512: e3c0ee683b654eae638deb41c52cf3187fa958dc5fa67778eaf8a83946b63f5b1d24c47bb965eaa910e3fcdcaf9eebf461eb3fc8e3a73ebaf03c7904521fda00

Author: sipa

src/.clang-format

@@ -47,6 +47,6 @@ SpacesInAngles:  false
 SpacesInContainerLiterals: true
 SpacesInCStyleCastParentheses: false
 SpacesInParentheses: false
-Standard:        Cpp03
+Standard:        Cpp11
 TabWidth:        8
 UseTab:          Never