Gradle can now ignore unit tests matching a pattern

To temporarily ignore unit tests matching a specific pattern,
run gradle like this:

	gradle test -PexcludeTests="*pqc*"

This example ignores the pqc unit tests; any pattern that matches
a fully qualified class name will work.

Author: jwcranford

build.gradle

@@ -190,6 +190,9 @@ subprojects {
 
     filter {
       includeTestsMatching "AllTest*"
+      if (project.hasProperty('excludeTests')) {
+        excludeTestsMatching "${excludeTests}"
+      }
     }
   }