Fix Endian functions names in hsTypes and hsStream.

Function and macro names for endianness were previously vague,
and on big-endian systems entirely misleading.  The names are
now properly descriptive of what they actually do.

Sources/Plasma/NucleusLib/pnNetCommon/plNetResManager.cpp

@@ -78,7 +78,7 @@ plNetResManager::~plNetResManager()
 
 plCreatable* plNetResManager::IReadCreatable(hsStream* s) const
 {
-    UInt16 hClass = s->ReadSwap16();
+    UInt16 hClass = s->ReadLE16();
     if (plFactory::CanCreate(hClass))
     {
         plCreatable *pCre = plFactory::Create(hClass);