[tycho-compiler-plugin] sync with recent maven changes

[laeubi]

Currently Tycho has a copied version of AbstractCompilerMojo but this is very outdated.

We should

1. Check what adjustments Tycho needs and probably bring them upstream
2. Sync the code so we have at least comparable functions

[laeubi]

One thing seems to be that

copied.org.apache.maven.plugin.AbstractCompilerMojo.getCompilerConfiguration(List<String>, List<String>)

is added to change/enhance the compiler config by extensing mojos ,that looks like something that could be applied upstream without much of a problem.

[laeubi]

Another issue is that the default value for compilerId is different this is something that might be discussed with the maven-devs if there is an alternative in copy the whole class.

[laeubi]

Another thing seems

compilerConfiguration.setSourceVersion(source != null ? source : DEFAULT_SOURCE_VERSION);
compilerConfiguration.setTargetVersion(target != null ? target : DEFAULT_TARGET_VERSION);
if (release != null) {
      compilerConfiguration.setReleaseVersion(release);
}

it would be good to have this as methods as well