Add maven-plugin bash build script

tools/gcc-bridge/maven-plugin/dev-build.sh

@@ -0,0 +1,17 @@
+#!/bin/bash -e
+
+if [ -z "$1" ]; then
+	echo "USAGE: ./dev-build.sh <version>"
+	echo
+	echo "where <version> relates to the version in './pom.xml' and the project.version property in '../../../build.gradle'"
+	echo "e.g., ./dev-build.sh 3.5-betadev"
+	exit 1
+fi
+
+[ -f "../runtime/build/libs/runtime-$1.jar" ] || { echo "Runtime library not built, run './gradlew publishToMavenLocal' in the renjin root folder, and ensure version is consistent" && exit 1; }
+
+echo "Building..."
+set -x
+mvn package
+mvn install:install-file -Dfile=../runtime/build/libs/runtime-$1.jar -DgroupId=org.renjin -DartifactId=gcc-runtime -Dversion=$1 -Dpackaging=jar
+mvn install:install-file -Dfile=target/gcc-bridge-maven-plugin-$1.jar -DgroupId=org.renjin -DartifactId=gcc-bridge-maven-plugin -Dversion=$1 -Dpackaging=jar -DpomFile=pom.xml