SM disable localized characters on element parsing

The special character tokens are localized character names! This
means that at least in German the %mu wasn't replaced in the
example, as the parser expected %my. So tell the parser to expect
non-localized input. And share it for all the parsing.

Change-Id: I4c3c0f35eb61c37a2101b51b445e7cc888a1f429
Reviewed-on: https://gerrit.libreoffice.org/73172
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>

starmath/inc/ElementsDockingWindow.hxx

@@ -31,6 +31,7 @@
 
 class SmDocShell;
 class SmNode;
+class SmParser;
 
 class SmElement
 {
@@ -107,7 +108,7 @@ class SmElementsControl : public Control
     bool m_bFirstPaintAfterLayout;
     rtl::Reference<AccessibleSmElementsControl> m_xAccessible;
 
-    void addElement(const OUString& aElementVisual, const OUString& aElementSource, const OUString& aHelpText);
+    void addElement(SmParser &rParser, const OUString& aElementVisual, const OUString& aElementSource, const OUString& aHelpText);
     void addElements(const SmElementDescr aElementsArray[], sal_uInt16 size);
     SmElement* current() const;
     void setCurrentElement(sal_uInt16);