Log Message:
Update to 1.1.20070704:

2007/07/04
	+ revise the resizable shadows so textbox's search dialog has text
	  visible in the shadow again.
	+ improve the prefixing of autoconf-related symbols in the installed
	  header files, taking into account symbols which are not mentioned in
	  dlg_config.h
	+ add a check when ERR returned from wgetch() to ensure that the
	  input/output streams are still valid.  If that happens, force
	  ESC to be returned, quitting dialog (report by Reiner Huober).
	+ add extern "C" declarations to dlg_keys.h so the corresponding
	  function declarations are exported to C++ as C symbols.
	+ updated config.guess, config.sub