CRUNCH-693: Make text parsing locale-independent

Standardize on US-based locale for number formatting (which is
backwards-compatible with historical behavior).

crunch-contrib/src/main/java/org/apache/crunch/contrib/text/TokenizerFactory.java

diff --git a/crunch-contrib/src/main/java/org/apache/crunch/contrib/text/TokenizerFactory.java b/crunch-contrib/src/main/java/org/apache/crunch/contrib/text/TokenizerFactory.java
index f43478d..555ad8c 100644
--- a/crunch-contrib/src/main/java/org/apache/crunch/contrib/text/TokenizerFactory.java
+++ b/crunch-contrib/src/main/java/org/apache/crunch/contrib/text/TokenizerFactory.java
@@ -17,14 +17,14 @@
  */
 package org.apache.crunch.contrib.text;
 
+import com.google.common.base.Preconditions;
+import com.google.common.collect.ImmutableSet;
+
 import java.io.Serializable;
 import java.util.Locale;
 import java.util.Scanner;
 import java.util.Set;
 
-import com.google.common.base.Preconditions;
-import com.google.common.collect.ImmutableSet;
-
 /**
  * Factory class that constructs {@link Tokenizer} instances for input strings that use a fixed
  * set of delimiters, skip patterns, locales, and sets of indices to keep or drop.
@@ -65,6 +65,7 @@
    */
   public Tokenizer create(String input) {
     Scanner s = new Scanner(input);
+    s.useLocale(Locale.US); // Use period for floating point number formatting
     if (delim != null) {
       s.useDelimiter(delim);
     }