Update to #150/#151 -- do not yet remove NumberInput.NASTY_SMALL_DOUBLE but deprecate

Author: cowtowncoder

src/main/java/com/fasterxml/jackson/core/io/NumberInput.java

@@ -4,6 +4,15 @@
 
 public final class NumberInput
 {
+    /**
+     * Formerly used constant for a value that was problematic on certain
+     * pre-1.8 JDKs.
+     *
+     * @deprecated Since 2.14 -- do not use
+     */
+    @Deprecated // since 2.14
+    public final static String NASTY_SMALL_DOUBLE = "2.2250738585072012e-308";
+
     /**
      * Constants needed for parsing longs from basic int parsing methods
      */