Log Message:
Update to 7.0.84

Notable changes:
 - Use a loop to preload anonymous inner classes when running under a \ 
SecurityManager, to be safe for future changes in the code or using a different \ 
compiler. (kkolinko)
 -  Implement a small optimisation to how JAR URLs are processed to reduce the \ 
storage of duplicate String objects in memory. Patch provided by Dmitri Blinov. \ 
(markt)

Full changelog:
 https://tomcat.apache.org/tomcat-7.0-doc/changelog.html