ICU 56 update step 1

source/Doxyfile.in

Index: source/Doxyfile.in
diff --git a/source/Doxyfile.in b/source/Doxyfile.in
index 90edbb18f2ec3e5e84b1ac6168cdefed24451f15..c99f27038f42596e03c92fa70ff8ef9cd023cc96 100644
--- a/source/Doxyfile.in
+++ b/source/Doxyfile.in
@@ -1,7 +1,7 @@
 # Doxyfile 1.3.7
 #  ********************************************************************
 #  * COPYRIGHT:
-#  * Copyright (c) 2004-2014, International Business Machines Corporation
+#  * Copyright (c) 2004-2015, International Business Machines Corporation
 #  * and others. All Rights Reserved.
 #  ********************************************************************
 
@@ -192,7 +192,7 @@ EXPAND_ONLY_PREDEF     = YES
 SEARCH_INCLUDES        = YES
 INCLUDE_PATH           = 
 INCLUDE_FILE_PATTERNS  = 
-PREDEFINED             = U_EXPORT2= U_STABLE= U_DRAFT= U_INTERNAL= U_SYSTEM= U_DEPRECATED= U_OBSOLETE= U_CALLCONV= U_CDECL_BEGIN= U_CDECL_END=  U_NO_THROW=\ "U_NAMESPACE_BEGIN=namespace icu{" "U_NAMESPACE_END=}" U_HAVE_STD_STRING=1 U_SHOW_CPLUSPLUS_API=1 U_DEFINE_LOCAL_OPEN_POINTER()= U_IN_DOXYGEN=1 U_OVERRIDE= U_FINAL=
+PREDEFINED             = U_EXPORT2= U_STABLE= U_DRAFT= U_INTERNAL= U_SYSTEM= U_DEPRECATED= U_OBSOLETE= U_CALLCONV= U_CDECL_BEGIN= U_CDECL_END=  U_NO_THROW=\ "U_NAMESPACE_BEGIN=namespace icu{" "U_NAMESPACE_END=}" U_HAVE_STD_STRING=1 U_SHOW_CPLUSPLUS_API=1 U_DEFINE_LOCAL_OPEN_POINTER()= U_IN_DOXYGEN=1 U_OVERRIDE= U_FINAL= UCONFIG_ENABLE_PLUGINS=1
 EXPAND_AS_DEFINED      = 
 SKIP_FUNCTION_MACROS   = YES
 #---------------------------------------------------------------------------