Add . to the bootstrap protoc include paths
This fixes the following error I got when building from scratch on Raspbian:
```
src/main/protobuf/invocation_policy.proto: File not found.
src/main/protobuf/command_line.proto: File not found.
```
Note:
```
protoc --version
libprotoc 3.0.0
```
Closes
@@ -189,7 +189,9 @@ if [ -z "${BAZEL_SKIP_JAVA_COMPILATION}" ]; then
log "Compiling Java stubs for protocol buffers..."
for f in $PROTO_FILES ; do
- run "${PROTOC}" -Isrc/main/protobuf/ \
+ run "${PROTOC}" \
+ -I. \
+ -Isrc/main/protobuf/ \
-Isrc/main/java/com/google/devtools/build/lib/buildeventstream/proto/ \
--java_out=${OUTPUT_DIR}/src \
--plugin=protoc-gen-grpc="${GRPC_JAVA_PLUGIN-}" \
