Enable Resin4 JSP compiler to run

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.0.5 GA, 6.1.0 CE RC1
• Fix Version/s: --Sprint - SP, 6.0.6 GA, 6.1.0 CE RC1
• Component/s: Environments, Environments > App Servers
• Labels: None
• Branch Version/s:
  6.0.x
• Backported to Branch:
  Committed

We are not able to run resin JSP compiler to precompile portal JSPs (jsp.precompile=on).

Problem is that Resin compiler requires Java 6 ("Resin 4.0 works with JDK 1.6 or greater.").
Exception is written in 'jspc_error':
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Caused by: java.lang.NoSuchMethodError: java.lang.String.isEmpty()Z
at com.caucho.env.service.ResinSystem.<init>(ResinSystem.java:96)
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