LANG-1316: Deprecate classes/methods moved to commons-text

Deprecated WordUtils and RandomStringUtils now that commons-text 1.1 was released.

src/main/java/org/apache/commons/lang3/RandomStringUtils.java

@@ -31,7 +31,11 @@
  *
  * <p>#ThreadSafe#</p>
  * @since 1.0
+ * @deprecated as of 3.6, use commons-text
+ * <a href="https://commons.apache.org/proper/commons-text/javadocs/api-release/org/apache/commons/text/RandomStringGenerator.html">
+ * RandomStringGenerator</a> instead
  */
+@Deprecated
 public class RandomStringUtils {
 
     /**

src/main/java/org/apache/commons/lang3/text/WordUtils.java

@@ -30,7 +30,11 @@
  * Each method documents its behaviour in more detail.</p>
  * 
  * @since 2.0
+ * @deprecated as of 3.6, use commons-text
+ * <a href="https://commons.apache.org/proper/commons-text/javadocs/api-release/org/apache/commons/text/WordUtils.html">
+ * WordUtils</a> instead
  */
+@Deprecated
 public class WordUtils {
 
     /**

src/test/java/org/apache/commons/lang3/RandomStringUtilsTest.java

@@ -37,6 +37,7 @@
 /**
  * Unit tests {@link org.apache.commons.lang3.RandomStringUtils}.
  */
+@Deprecated
 public class RandomStringUtilsTest {
 
     //-----------------------------------------------------------------------

src/test/java/org/apache/commons/lang3/text/WordUtilsTest.java

@@ -29,6 +29,7 @@
 /**
  * Unit tests for WordUtils class.
  */
+@Deprecated
 public class WordUtilsTest {
 
     //-----------------------------------------------------------------------