[jeanbisutti]

QuickPerf finds the class implementing SpecifiableGlobalAnnotations, and the one implementing SpecifiableSqlFormatter, by scanning the org/quickperf directories of the class path (QuickPerfUserConfigClasses). It converted each directory URL to a file path with URLDecoder.decode(resource.getPath(), "UTF-8"). URLDecoder decodes HTML form data, where + stands for a space, but in a URL path a space is written %20 and + is a plus sign.

So when the URL of a class path directory contained a +, the decoded path did not exist. For example, C:\work\my+project\target\test-classes became C:\work\my project\target\test-classes, and /home/dev/R+D/app/build/classes/java/test became /home/dev/R D/app/build/classes/java/test. A folder named C++ has the same problem. QuickPerf skipped the directory without any message: the global annotations were not applied, and a user SQL formatter was not used.

This PR encodes + as %2B before decoding, so that a + in the URL decodes to +. An encoded %2B or %20 decodes as before.