[gwt-contrib] Pre-initialize ResourceOracleImpl's classpaths in parallel with other startup tasks. (issue1265801)

[scottb]

Reviewers: conroy,



Please review this at http://gwt-code-reviews.appspot.com/1265801/show

Affected files:
  M dev/core/src/com/google/gwt/dev/DevMode.java
  M dev/core/src/com/google/gwt/dev/resource/impl/ResourceOracleImpl.java
  M dev/core/src/com/google/gwt/dev/resource/impl/ZipFileClassPathEntry.java


--
http://groups.google.com/group/Google-Web-Toolkit-Contributors