Check in the pristine copy of ICU 4.6...

icu46/source/tools/toolutil/pkg_icu.h

+/******************************************************************************
+ *   Copyright (C) 2008-2009, International Business Machines
+ *   Corporation and others.  All Rights Reserved.
+ *******************************************************************************
+ */
+
+#ifndef __PKG_ICU_H__
+#define __PKG_ICU_H__
+
+#include "unicode/utypes.h"
+
+#define U_PKG_RESERVED_CHARS "\"%&'()*+,-./:;<=>?_"
+
+U_CAPI int U_EXPORT2
+writePackageDatFile(const char *outFilename, const char *outComment,
+                    const char *sourcePath, const char *addList, U_NAMESPACE_QUALIFIER Package *pkg,
+                    char outType);
+
+U_CAPI U_NAMESPACE_QUALIFIER Package * U_EXPORT2
+readList(const char *filesPath, const char *listname, UBool readContents);
+
+#endif