clang-format: No spaces around directory specifiers

This fixes PR14683. We used to format like this:
  #include <a / b>

And this patch changes this to:
  #include <a/b>

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170910 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index c8088e2..a08f7c6 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -613,6 +613,7 @@
 
 TEST_F(FormatTest, HandlesIncludeDirectives) {
   EXPECT_EQ("#include <string>\n", format("#include <string>\n"));
+  EXPECT_EQ("#include <a/b/c.h>\n", format("#include <a/b/c.h>\n"));
   EXPECT_EQ("#include \"a/b/string\"\n", format("#include \"a/b/string\"\n"));
   EXPECT_EQ("#include \"string.h\"\n", format("#include \"string.h\"\n"));
   EXPECT_EQ("#include \"string.h\"\n", format("#include \"string.h\"\n"));