.clang-format: update to 3.9.1

Change-Id: Ia3b00907f98330ecaf28832b2c0a68e42cf93d6e

.clang-format

@@ -1,7 +1,7 @@
 ---
 Language:        Cpp
 # BasedOnStyle:  Google
-# Generated with clang-format 3.8.1
+# Generated with clang-format 3.9.1
 AccessModifierOffset: -1
 AlignAfterOpenBracket: Align
 AlignConsecutiveAssignments: false
@@ -37,6 +37,8 @@ BreakBeforeBinaryOperators: None
 BreakBeforeBraces: Attach
 BreakBeforeTernaryOperators: true
 BreakConstructorInitializersBeforeComma: false
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: true
 ColumnLimit:     80
 CommentPragmas:  '^ IWYU pragma:'
 ConstructorInitializerAllOnOneLineOrOnePerLine: false
@@ -54,6 +56,7 @@ IncludeCategories:
     Priority:        2
   - Regex:           '.*'
     Priority:        3
+IncludeIsMainRegex: '([-_](test|unittest))?$'
 IndentCaseLabels: true
 IndentWidth:     2
 IndentWrappedFunctionNames: false