Added maven pom.xml files.
Don't use deprecated tasks element in pom.xml.
Update generated files
Update gitignores
Adapt to new language build.
Fixes for two-stage build and cleanup.
Made strj and the generator Java projects. Remove dependence on strategoxt.jar for everything.
Remove versions from external dependencies and plugins, are now managed by the parent pom.
Add project metadata to POM files, required for publishing to the Maven central repository.
Remove unused launchers
Changes for build script simplification.
Update custom build scripts.
Make sure that Eclipse plugins are not installed and deployed.
Add dependency on required nativebundle.
Don't skip installation and deployment, not required.
Use eclipse.spoofaximp.nativeprefix for native path instead.
Bump version to 1.3.0-SNAPSHOT
Merge branch 'master' into spoofax-release