Relocating Tests & Updating references

Moving the pattern validation test constructs into a sub directory
intended to hold regex-type testing elements.

Author: jeremiahjstacey

src/test/java/org/owasp/esapi/reference/AbstractPatternTest.java renamed to src/test/java/org/owasp/esapi/reference/regex/AbstractPatternTest.java

@@ -1,4 +1,4 @@
-package org.owasp.esapi.reference;
+package org.owasp.esapi.reference.regex;
 
 import java.util.regex.Pattern;
 

src/test/java/org/owasp/esapi/reference/EsapiWhitelistValidationPatternTester.java renamed to src/test/java/org/owasp/esapi/reference/regex/EsapiWhitelistValidationPatternTester.java

@@ -1,4 +1,4 @@
-package org.owasp.esapi.reference;
+package org.owasp.esapi.reference.regex;
 
 import java.util.ArrayList;
 import java.util.Collection;