Search PATH for JRE in Windows

[farzadpanahi]

Most of the JRE installations in Windows (including Oracle JRE) do not add JAVA_HOME environment variable after installation. In this case the generated exe file will fail to run because it cannot find the JRE.

This PR will include %PATH% along side %JAVA_HOME% to search for JRE. This feature is implemented in Launch4j 3.13 based on FR 127.

For this reason both maven and gradle plugins for Launch4j need to be upgraded. Maven plugin is already upgraded to 2.1.1. This PR also upgrades gradle plugin to edu.sc.seis.launch4j:launch4j:2.5.0

[fvarrui]

Hi @farzadpanahi!
Thanks so much for your contribution. There's an issue with gradle-launch4j 2.5.0. Does your changes work with 2.4.7?

[farzadpanahi]

@fvarrui I will try to test it this week and update you.

[Hungryee]

Hello, @fvarrui
Thank you for your amazing plugin, does to the work for me and others. The only issue is the above-mentioned problem: bundled jre in Windows EXE is not found on launch: the message says the bundled jre is missinng or corrupted.
Could you please have a look again?

[fvarrui]

Changes have been merged into master leaving gradle-plugin v2.4.7. Now you can try to install JavaPackager v1.6.0-SNAPSHOT manually to your local repo as it's explained here.