Upgrade to clang-format 11

The formatting changes here are not too large and also nice: in
particular clang-format-11 appears to do better handling of `{...}`
constructor braces/arguments.

.drone.jsonnet

@@ -217,7 +217,7 @@ local mac_builder(name, build_type='Release', werror=true, cmake_extra='', extra
                 'echo "Building on ${DRONE_STAGE_MACHINE}"',
                 apt_get_quiet + ' update',
                 apt_get_quiet + ' install -y eatmydata',
-                'eatmydata ' + apt_get_quiet + ' install -y git clang-format-9',
+                'eatmydata ' + apt_get_quiet + ' install -y git clang-format-11',
                 './contrib/ci/drone-format-verify.sh']
         }]
     },

contrib/ci/docker/lint.dockerfile

@@ -1,3 +1,3 @@
 FROM debian:sid
 RUN /bin/bash -c 'echo "man-db man-db/auto-update boolean false" | debconf-set-selections'
-RUN /bin/bash -c 'apt-get -o=Dpkg::Use-Pty=0 -q update && apt-get -o=Dpkg::Use-Pty=0 -q install -y eatmydata git clang-format-9'
+RUN /bin/bash -c 'apt-get -o=Dpkg::Use-Pty=0 -q update && apt-get -o=Dpkg::Use-Pty=0 -q install -y eatmydata git clang-format-11'

contrib/ci/drone-format-verify.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
 test "x$IGNORE" != "x" && exit 0
 repo=$(readlink -e $(dirname $0)/../../)
-clang-format-9 -i $(find $repo/jni $repo/daemon $repo/llarp $repo/include $repo/pybind | grep -E '\.[hc](pp)?$')
+clang-format-11 -i $(find $repo/jni $repo/daemon $repo/llarp $repo/include $repo/pybind | grep -E '\.[hc](pp)?$')
 git --no-pager diff --exit-code --color || (echo -ne '\n\n\e[31;1mLint check failed; please run ./contrib/format.sh\e[0m\n\n' ; exit 1)

contrib/format.sh

@@ -2,4 +2,4 @@
 
 # TODO: readlink -e is a GNU-ism
 cd "$(readlink -e $(dirname $0)/../)"
-clang-format-9 -i $(find jni daemon llarp include pybind | grep -E '\.[hc](pp)?$') &> /dev/null
+clang-format-11 -i $(find jni daemon llarp include pybind | grep -E '\.[hc](pp)?$') &> /dev/null