[widgets] Some possible i18n test bugs

I've identified a few more possible test bugs. If there are no objections I'll make the changes I've suggested below and commit them.

1. i18nrl20.wgt Tests that nested LRO and RTL directions apply correctly to the name element. To pass, the displayed value of the name element must render as "< PASSED -->".

<widget id="i18nlro20:" xmlns="http://www.w3.org/ns/widgets">
   <name><span dir="lro">&lt; PAS<span dir="rtl">&lt;-- SED</span></span></name>
</widget>

However I'm pretty sure that the result you should get from this is:

< PASDES-->

Which is what Wookie generates. I think the test should be:

<widget id="i18nlro20:" xmlns="http://www.w3.org/ns/widgets">
   <name><span dir="lro">&lt; PAS<span dir="rtl">&lt;-- DES</span></span></name>
</widget>

2. 18nrlo02.wgt Tests that RLO direction applies to the name element's short attribute. To pass, the displayed value must render as "PASSED".

<widget id="i18nrlo02:" xmlns="http://www.w3.org/ns/widgets">
   <name dir="ltr"> a <span dir="rlo">TSET</span> (3)</name>
</widget>

This clearly isn't correct. I think it should be:

<widget id="i18nrlo02:" xmlns="http://www.w3.org/ns/widgets">
   <name dir="ltr">P<span dir="rlo">DESSA</span> (3)</name>
</widget>


3.i18nrtl21.wgt Tests that nested RTL and LRO directions apply correctly to the name element. To pass, the displayed value must render as "< PASSED -->".
<widget id="i18nrtl21:" xmlns="http://www.w3.org/ns/widgets">
   <name><span dir="rtl">PAS<span dir="lro">SED --&gt;</span> &gt;</span></name>
   <description>The name should be "&lt; PASSED --&gt;"</description>
</widget>

I get "< SED-->SAP" for this one; I think this should be:

<widget id="i18nrtl21:" xmlns="http://www.w3.org/ns/widgets">
   <name><span dir="rtl">SAP &gt;<span dir="lro">SED --&gt;</span></span></name>
   <description>The name should be "&lt; PASSED --&gt;"</description>
</widget>

4. 18nrtl22.wgt Tests that nested RTL and RLO directions apply correctly to the name element. To pass, the displayed value must render as "< PASSED -->".

<widget id="i18nrtl22:" xmlns="http://www.w3.org/ns/widgets">
   <name><span dir="rtl">PAS<span dir="rlo">&lt;-- DES</span> &gt;</span></name>
   <description>The name should be "&lt; PASSED --&gt;"</description>
</widget>

I get "< SED-->SAP" for this one; I think this should be:

<widget id="i18nrtl22:" xmlns="http://www.w3.org/ns/widgets">
   <name><span dir="rtl">SAP &gt;<span dir="rlo">&lt;-- DES</span></span></name>
   <description>The name should be "&lt; PASSED --&gt;"</description>
</widget>


S