Use standard library style members of wxArrayString (and wxString) ...

... which will make it easier to change the types of those containers to
std::vectors of other string-like classes

for wxString,

IsEmpty => empty
Clear => clear
Alloc => reserve

for wxArrayString,

Count => size
GetCount => size
IsEmpty => empty
Add => push_back
Clear => clear
Empty => clear
Sort => std::sort (only with default comparator)
SetCount => resize
Last => back
Item => operator []
Alloc => reserve

include/audacity/EffectAutomationParameters.h

@@ -290,7 +290,7 @@ public:
 
       wxArrayString parsed = wxCmdLineParser::ConvertStringToArgs(parms);
 
-      for (size_t i = 0, cnt = parsed.GetCount(); i < cnt; i++)
+      for (size_t i = 0, cnt = parsed.size(); i < cnt; i++)
       {
          wxString key = parsed[i].BeforeFirst(wxT('=')).Trim(false).Trim(true);
          wxString val = parsed[i].AfterFirst(wxT('=')).Trim(false).Trim(true);