At this point, LLUICtrlFactory::getLayeredXMLNode() is a pretty thin wrapper
around LLDir::findSkinnedFilenames() and LLXMLNode::getLayeredXMLNode().
Until now, LLUICtrlFactory::getLayeredXMLNode() passed (by default)
LLDir::CURRENT_SKIN to LLDir::findSkinnedFilenames(). But that meant that a
caller such as LLTransUtil::parseStrings() that wants almost the same
functionality, but with LLDir::ALL_SKINS instead, had to clone the logic from
LLUICtrlFactory::getLayeredXMLNode(). Allowing its caller to pass the desired
LLDir::ESkinConstraint enum value eliminates the need to clone its logic.
Remove cloned logic from LLTransUtil::parseStrings().
At Richard's suggestion, changed the bool merge parameter to new enum
ESkinConstraint with values CURRENT_SKIN and ALL_SKINS. This clarifies what
we're requesting at the point of the call.
Until now, adding a xui/en/strings.xml file in any non-default skin meant you
had to clone the entire file, editing only the particular entries you wanted
to override. With this change, we load strings.xml file(s) from the default
skin before loading the specified skin -- so a non-default skin can now
provide a strings.xml file containing only the specific entries it wants to
override.
Oz Linden