use Locale for all case conversions

Author: devisnik

analyzer/src/main/java/com/novoda/sqlite/model/Column.java

@@ -2,6 +2,8 @@
 
 import com.novoda.sqlite.StringUtil;
 
+import java.util.Locale;
+
 public final class Column {
     private final String name;
     private final String type;
@@ -28,7 +30,7 @@ public String getCamelizedSmallName() {
         if (camel.length() <= 1) {
             return "_" + camel;
         }
-        return "_" + camel.substring(0, 1).toLowerCase() + camel.substring(1);
+        return "_" + camel.substring(0, 1).toLowerCase(Locale.US) + camel.substring(1);
     }
 
     public String getType() {

analyzer/src/main/java/com/novoda/sqlite/model/DataAffinity.java

@@ -1,5 +1,7 @@
 package com.novoda.sqlite.model;
 
+import java.util.Locale;
+
 public enum DataAffinity {
     TEXT, NUMERIC, INTEGER, REAL, NONE;
 
@@ -12,7 +14,7 @@ public static DataAffinity fromType(String type) {
      * section 2.1 Determination of column affinity
      */
     private static DataAffinity computeAffinity(String type) {
-        String deftype = type.toLowerCase();
+        String deftype = type.toLowerCase(Locale.US);
         if (deftype.contains("int")) {
             return DataAffinity.INTEGER;
         }