Building on Linux ppc64le with GNU tools

Until the nar-maven-plugin upstream has architecture-os-linker entries for ppc64le.Linux.gpp, the pljava-so project directory contains an extra settings file aol.ppc64le-linux-gpp.properties. To use it, add -Dnar.aolProperties=pljava-so/aol.ppc64le-linux-gpp.properties to the mvn command line:

mvn -Dnar.aolProperties=pljava-so/aol.ppc64le-linux-gpp.properties clean install