Check in the pristine copy of ICU 4.6...

icu46/source/test/compat/readme.txt

+Copyright (c) 2007, International Business Machines Corporation and others. All Rights Reserved.
+
+tzone.pl : A perl script that test the timezone information between the system time and ICU time.
+
+         
+Files:
+    tzdate.c                    Source file that compares the ICU time and system time.
+    Makefile.in                                 Use to create the Makefile
+    tzone.pl                                    Perl script that calls the tzdate program with the correct TZ and arguments.
+
+To Build on Unixes
+    1.  Build ICU.  tzdate is not built automatically.
+        Specify an ICU install directory when running configure,
+        using the --prefix option.  The steps to build ICU will look something
+        like this:
+           cd <icu directory>/source
+           runConfigureICU <platform-name> --prefix <icu install directory> [other options]
+           gmake all
+           
+    2.  Install ICU, 
+           gmake install
+           
+ To Run on Unixes
+           cd <icu directory>/source/test/compat
+
+           export LD_LIBRARY_PATH=<icu install directory>/lib:.:$LD_LIBRARY_PATH
+           gmake
+           
+           tzone.pl
+                        -This will use the current date.
+                        -To use a different date, you must specify by:  
+           tzone.pl year month day
+                        -All three arguments are integer values
+           
+           
+ Note:  The name of the LD_LIBRARY_PATH variable is different on some systems.
+        If in doubt, run the sample using "gmake check", and note the name of
+        the variable that is used there.  LD_LIBRARY_PATH is the correct name
+        for Linux and Solaris.
+