Recognize the 'limit' keyword and script arguments, allow '$' in
variable names, and highlight $target variables.

	PR 2140
	* translate.cxx (mapvar::del): Add ability to delete an indexed stat
	from (p)maps.
	(delete_statement_operand_visitor::visit_symbol): Add ability to
	delete entire pmaps and scalars.
	(delete_statement_operand_tmp_visitor): Add a special tmpvar visitor
	to parallel delete_statement_operand_visitor.
	(c_tmpcounter::visit_delete_statement): Invoke the new visitor.
	* testsuite/buildok/delete.stp: Also test scalar deletes.
	* vim/syntax/stap.vim: Recognize 'delete' operator.

2006-01-16  Josh Stone  <joshua.i.stone@intel.com>

	* stat.c (_stp_stat_clear): add a function that just
	clears a Stat, so we can use delete in the translator.

	* vim/filetype.vim: defines *.stp files as SystemTap scripts
	* vim/ftplugin/stap.vim: sets the comment styles
	* vim/indent/stap.vim: enables simple auto-indenting
	* vim/syntax/stap.vim: defines syntax highlighting