ICU 56 update step 1

source/i18n/unicode/region.h

Index: source/i18n/unicode/region.h
diff --git a/source/i18n/unicode/region.h b/source/i18n/unicode/region.h
index c33681e7e79879c6a8d418c74ecc70057a68ae72..cb75234bf9b6196aa091508042703588e376a4e8 100644
--- a/source/i18n/unicode/region.h
+++ b/source/i18n/unicode/region.h
@@ -1,6 +1,6 @@
 /*
  *******************************************************************************
- * Copyright (C) 2014, International Business Machines Corporation and others.
+ * Copyright (C) 2014-2015, International Business Machines Corporation and others.
  * All Rights Reserved.
  *******************************************************************************
  */
@@ -104,9 +104,9 @@ public:
 #ifndef U_HIDE_DRAFT_API
     /**
      * Returns an enumeration over the IDs of all known regions that match the given type.
-     * @draft ICU 51
+     * @draft ICU 55
      */
-    static StringEnumeration* U_EXPORT2 getAvailable(URegionType type);
+    static StringEnumeration* U_EXPORT2 getAvailable(URegionType type, UErrorCode &status);
 #endif /* U_HIDE_DRAFT_API */
    
     /**
@@ -135,18 +135,18 @@ public:
      * any sub-regions. For example, calling this method with region "150" (Europe) returns an enumeration containing
      * the various sub regions of Europe - "039" (Southern Europe) - "151" (Eastern Europe) - "154" (Northern Europe)
      * and "155" (Western Europe).
-     * @draft ICU 51 
+     * @draft ICU 55 
      */
-    StringEnumeration* getContainedRegions() const;
+    StringEnumeration* getContainedRegions(UErrorCode &status) const;
 
     /**
      * Returns an enumeration over the IDs of all the regions that are children of this region anywhere in the region
      * hierarchy and match the given type.  This API may return an empty enumeration if this region doesn't have any
      * sub-regions that match the given type. For example, calling this method with region "150" (Europe) and type
      * "URGN_TERRITORY" returns a set containing all the territories in Europe ( "FR" (France) - "IT" (Italy) - "DE" (Germany) etc. )
-     * @draft ICU 51 
+     * @draft ICU 55 
      */
-    StringEnumeration* getContainedRegions( URegionType type ) const;
+    StringEnumeration* getContainedRegions( URegionType type, UErrorCode &status ) const;
 #endif /* U_HIDE_DRAFT_API */
  
     /**
@@ -160,9 +160,9 @@ public:
      * For deprecated regions, return an enumeration over the IDs of the regions that are the preferred replacement
      * regions for this region.  Returns null for a non-deprecated region.  For example, calling this method with region
      * "SU" (Soviet Union) would return a list of the regions containing "RU" (Russia), "AM" (Armenia), "AZ" (Azerbaijan), etc...
-     * @draft ICU 51 
+     * @draft ICU 55 
      */
-    StringEnumeration* getPreferredValues() const;
+    StringEnumeration* getPreferredValues(UErrorCode &status) const;
 #endif /* U_HIDE_DRAFT_API */
 
     /**