run faster. This fixes ticket #235.
Incidentally, refactor exif and search to use the same patterns
overall so that if you understand one, you understand the other and
they generally use the same strings for localization.
E.g. "%link_startClick here%link_end" is now '<a href="%url">Click here</a>'.
Note: This isn't always the best solution. E.g. consider "Foo <a href='%url' class='gDialogLink'>bar</a>." Now the translator has to deal with
preserving CSS classes too...