[TECHNICAL SUPPORT] LPS-39671 ant build-ruby-gems-jar builds Linux executables with bad shebang

Hi Laci,

Based on the documentation attached to http://issues.liferay.com/browse/LPS-39671 I found that we cannot use the possibly official fix for RubyGems, hence I chose the pattern we use to fix CKEditor issues in the related build.xml file with the replace task.

The related fix runs only on Windows, so you should have a VM for the testing or someone else with using Windows OS.

Regards,
Vilmos