This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
"equalsIgnoreCase", AND-ing, OR-ing are but one of the many shortcomings, which has led to an increased adoption of JSTL tags as the preferred set tags while developing JSPs.
If migrating to JSTL is not a feasible option for you, then I fear you can either (a) write a Java scriptlet to implement your logic, or (b), extend the "logic" taglib library and put in your own implementation of "equalsIgnoreCase" within the TLD.
I generally figure that if I have to think for more than a few seconds about how to code something using tags in the jsp then it is better to just move the logic into the action form class. I am not sure what you are testing here...if you are comparing two form properties you could add a method that returned a boolean and use logic:equal or maybe you could create a method that returned the needed property as all upper (or lower) case.