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diff --git a/third_party/java/jopt-simple/src/main/java/joptsimple/internal/Strings.java b/third_party/java/jopt-simple/src/main/java/joptsimple/internal/Strings.java
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index 0000000000..50ea3e49ea
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+++ b/third_party/java/jopt-simple/src/main/java/joptsimple/internal/Strings.java
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+/*
+ The MIT License
+
+ Copyright (c) 2004-2015 Paul R. Holser, Jr.
+
+ Permission is hereby granted, free of charge, to any person obtaining
+ a copy of this software and associated documentation files (the
+ "Software"), to deal in the Software without restriction, including
+ without limitation the rights to use, copy, modify, merge, publish,
+ distribute, sublicense, and/or sell copies of the Software, and to
+ permit persons to whom the Software is furnished to do so, subject to
+ the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+package joptsimple.internal;
+
+import java.util.Iterator;
+
+import static java.lang.System.*;
+import static java.util.Arrays.*;
+
+/**
+ * @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a>
+ */
+public final class Strings {
+    public static final String EMPTY = "";
+    public static final String LINE_SEPARATOR = getProperty( "line.separator" );
+
+    private Strings() {
+        throw new UnsupportedOperationException();
+    }
+
+    /**
+     * Gives a string consisting of the given character repeated the given number of times.
+     *
+     * @param ch the character to repeat
+     * @param count how many times to repeat the character
+     * @return the resultant string
+     */
+    public static String repeat( char ch, int count ) {
+        StringBuilder buffer = new StringBuilder();
+
+        for ( int i = 0; i < count; ++i )
+            buffer.append( ch );
+
+        return buffer.toString();
+    }
+
+    /**
+     * Tells whether the given string is either {@code} or consists solely of whitespace characters.
+     *
+     * @param target string to check
+     * @return {@code true} if the target string is null or empty
+     */
+    public static boolean isNullOrEmpty( String target ) {
+        return target == null || target.isEmpty();
+    }
+
+
+    /**
+     * Gives a string consisting of a given string prepended and appended with surrounding characters.
+     *
+     * @param target a string
+     * @param begin character to prepend
+     * @param end character to append
+     * @return the surrounded string
+     */
+    public static String surround( String target, char begin, char end ) {
+        return begin + target + end;
+    }
+
+    /**
+     * Gives a string consisting of the elements of a given array of strings, each separated by a given separator
+     * string.
+     *
+     * @param pieces the strings to join
+     * @param separator the separator
+     * @return the joined string
+     */
+    public static String join( String[] pieces, String separator ) {
+        return join( asList( pieces ), separator );
+    }
+
+    /**
+     * Gives a string consisting of the string representations of the elements of a given array of objects,
+     * each separated by a given separator string.
+     *
+     * @param pieces the elements whose string representations are to be joined
+     * @param separator the separator
+     * @return the joined string
+     */
+    public static String join( Iterable<String> pieces, String separator ) {
+        StringBuilder buffer = new StringBuilder();
+
+        for ( Iterator<String> iter = pieces.iterator(); iter.hasNext(); ) {
+            buffer.append( iter.next() );
+
+            if ( iter.hasNext() )
+                buffer.append( separator );
+        }
+
+        return buffer.toString();
+    }
+}