Merge pull request #1 from asmodehn/master

[JENKINS-20141] Allowing spaces in logdir
[maven-release-plugin] prepare release drmemory-api-0.1.3
[maven-release-plugin] prepare for next development iteration
fixing working dir to be workspace, and not Jenkins home. Useful if executable run by dr.memory generate files in relative path.
Merge remote-tracking branch 'remotes/upstream/master'