Fix small Eclipse project configuration issues

• Type: Regression Bug
• Status: Resolved
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.0.X, 7.1.X, 7.2.X, Master
• Component/s: Dev Tools > Portal Build Env
• Labels: None
• Branch Version/s:
  7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 2
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/77670

A series of small fixes to Eclipse project configuration.