Merge pull request #2 from jenkinsci/master

Cleanup of pom and som help files
Merge pull request #3 from jenkinsci/master

Release 1.3
Merge pull request #4 from jenkinsci/master

Added README file
Merge pull request #5 from jenkinsci/master

Fixing build file when extended script source is null
Merge pull request #6 from jenkinsci/master

Release antexec-1.6
-Add Dependency on Token Macro

-Remove the list of property passed to Ant and instead resolve them in the plug in using Token Macro
-Delete the antexec_build.xml from the workspace after the execution

-This file should be temporary, since its the purpose of the plugin
Merge pull request #7 from max91ess/master

Remove unresolved Environment and Parameter (See details)
Added option to delete build files and mve ant-contrib option to build step configuration.
Merge pull request #1 from svasek/master

Prepare for release 1.7