case-insensitive plugins

hello smarty-dev, i just broke bc to certain smarty-installations recently. :) tag-names are case-insensitive now. this means: - {foreach} and {FOREACH} are the same - $smarty->register_function('FOO', 'func_foo') and $smarty->register_function('foo', 'func_foo') do the same (the second overwrites the first) - {$foo|CAPITALIZE} and {$foo|capitalizE} are the same. the change affects builtin-functions, custom-function, block-functions, compiler-functions and modifiers. the change should not be problematic for most of you, since: - using {foo} and {FOO} for different things is *really* bad style - SMARTY_FUNCTION_FOO() and smarty_function_foo habe been the same in php since long before. the only thing, that could be problematic, is if you uses mixed case filenames on a case-sensitive filesystem. before this change. before the latest commmit: {Foo} in a template would have tried to autoload "compiler.Foo.php", then "block.Foo.php", then "function.Foo.php", then raise an error. now {Foo} will make Smarty look for "compiler.foo.php", "block.foo.php", "function.foo.php". windows-systems are not affected, since their filenames are not case-sensitive. users of all other systems are encouraged to update their setups to use lower-case filenames in their plugins-dirs. please tell me, if this change affects you, and if you have any problems with it. greetings messju