partial cherry-pick of 'update clang-format to 5.0'

.clang-format

@@ -1,5 +1,7 @@
 ---
 Language:        Cpp
 BasedOnStyle:  Google
+DerivePointerAlignment: false
+PointerAlignment: Left
 ...
 

templates/tools/dockerfile/clang_format.include

@@ -1,5 +1,5 @@
-RUN apt-get update && apt-get -y install wget
-RUN echo "deb http://llvm.org/apt/jessie/ llvm-toolchain-jessie-3.8 main" >> /etc/apt/sources.list
-RUN echo "deb-src http://llvm.org/apt/jessie/ llvm-toolchain-jessie-3.8 main" >> /etc/apt/sources.list
-RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | apt-key add -
-RUN apt-get update && apt-get -y install clang-format-3.8
+RUN apt-get update && apt-get -y install wget xz-utils
+RUN wget http://releases.llvm.org/5.0.0/clang+llvm-5.0.0-linux-x86_64-ubuntu14.04.tar.xz
+RUN tar xf clang+llvm-5.0.0-linux-x86_64-ubuntu14.04.tar.xz
+RUN ln -s /clang+llvm-5.0.0-linux-x86_64-ubuntu14.04/bin/clang-format /usr/local/bin/clang-format
+ENV CLANG_FORMAT=clang-format

tools/dockerfile/grpc_clang_format/Dockerfile

@@ -14,11 +14,11 @@
 
 FROM debian:jessie
 
-RUN apt-get update && apt-get -y install wget
-RUN echo "deb http://llvm.org/apt/jessie/ llvm-toolchain-jessie-3.8 main" >> /etc/apt/sources.list
-RUN echo "deb-src http://llvm.org/apt/jessie/ llvm-toolchain-jessie-3.8 main" >> /etc/apt/sources.list
-RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | apt-key add -
-RUN apt-get update && apt-get -y install clang-format-3.8
+RUN apt-get update && apt-get -y install wget xz-utils
+RUN wget http://releases.llvm.org/5.0.0/clang+llvm-5.0.0-linux-x86_64-ubuntu14.04.tar.xz
+RUN tar xf clang+llvm-5.0.0-linux-x86_64-ubuntu14.04.tar.xz
+RUN ln -s /clang+llvm-5.0.0-linux-x86_64-ubuntu14.04/bin/clang-format /usr/local/bin/clang-format
+ENV CLANG_FORMAT=clang-format
 
 ADD clang_format_all_the_things.sh /
 CMD ["echo 'Run with tools/distrib/clang_format_code.sh'"]

tools/dockerfile/grpc_clang_format/clang_format_all_the_things.sh

@@ -22,14 +22,14 @@ DIRS="src/core/lib src/core/tsi src/core/ext src/cpp test/core test/cpp include
 GLOB="*.h *.c *.cc"
 
 # clang format command
-CLANG_FORMAT=clang-format-3.8
+CLANG_FORMAT=${CLANG_FORMAT:-clang-format-5.0}
 
 files=
 for dir in $DIRS
 do
   for glob in $GLOB
   do
-    files="$files `find ${CLANG_FORMAT_ROOT}/$dir -name $glob -and -not -name *.generated.* -and -not -name *.pb.h -and -not -name *.pb.c -and -not -name *.pb.cc -and -not -name end2end_tests.c -and -not -name end2end_nosec_tests.c -and -not -name public_headers_must_be_c89.c`"
+    files="$files `find ${CLANG_FORMAT_ROOT}/$dir -name $glob -and -not -name '*.generated.*' -and -not -name '*.pb.h' -and -not -name '*.pb.c' -and -not -name '*.pb.cc' -and -not -name end2end_tests.c -and -not -name end2end_nosec_tests.c -and -not -name public_headers_must_be_c89.c`"
   done
 done
 

tools/dockerfile/test/sanity/Dockerfile

@@ -100,11 +100,11 @@ RUN curl -fSsL -O https://github.com/bazelbuild/bazel/releases/download/0.4.4/ba
 RUN chmod +x ./bazel-0.4.4-installer-linux-x86_64.sh
 RUN ./bazel-0.4.4-installer-linux-x86_64.sh
 
-RUN apt-get update && apt-get -y install wget
-RUN echo "deb http://llvm.org/apt/jessie/ llvm-toolchain-jessie-3.8 main" >> /etc/apt/sources.list
-RUN echo "deb-src http://llvm.org/apt/jessie/ llvm-toolchain-jessie-3.8 main" >> /etc/apt/sources.list
-RUN wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | apt-key add -
-RUN apt-get update && apt-get -y install clang-format-3.8
+RUN apt-get update && apt-get -y install wget xz-utils
+RUN wget http://releases.llvm.org/5.0.0/clang+llvm-5.0.0-linux-x86_64-ubuntu14.04.tar.xz
+RUN tar xf clang+llvm-5.0.0-linux-x86_64-ubuntu14.04.tar.xz
+RUN ln -s /clang+llvm-5.0.0-linux-x86_64-ubuntu14.04/bin/clang-format /usr/local/bin/clang-format
+ENV CLANG_FORMAT=clang-format
 
 # Prepare ccache
 RUN ln -s /usr/bin/ccache /usr/local/bin/gcc