Fully remove hsStlUtils, as it is now completely unused

Sources/Plasma/PubUtilLib/plFile/hsFiles_Unix.cpp

@@ -50,9 +50,9 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 #include <sys/types.h>
 #include <unistd.h>
 #include <glob.h>
+#include <string>
 #include "hsTemplates.h"
 #include "plFileUtils.h"
-#include "hsStlUtils.h"
 
 struct hsFolderIterator_Data {
     glob_t fGlobBuf;

Sources/Plasma/PubUtilLib/plFile/plEncryptedStream.cpp

@@ -45,6 +45,7 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 #include "hsSTLStream.h"
 
 #include <time.h>
+#include <wchar.h>
 
 static const uint32_t kDefaultKey[4] = { 0x6c0a5452, 0x3827d0f, 0x3a170b92, 0x16db7fc2 };
 static const int kEncryptChunkSize = 8;

Sources/Plasma/PubUtilLib/plFile/plFileUtils.cpp

@@ -52,7 +52,6 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 
 #include "HeadSpin.h"
 #include "hsWindows.h"
-#include "hsStlUtils.h"
 #include "plFileUtils.h"
 #include "hsFiles.h"
 #include "hsStringTokenizer.h"

Sources/Plasma/PubUtilLib/plFile/plSecureStream.cpp

@@ -39,6 +39,8 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
       Mead, WA   99021
 
 *==LICENSE==*/
+#include <string>
+
 #include "plSecureStream.h"
 #include "hsWindows.h"
 

Sources/Plasma/PubUtilLib/plFile/plStreamSource.cpp

@@ -40,6 +40,7 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 
 *==LICENSE==*/
 
+#include <string>
 #include "hsFiles.h"
 #include "plStreamSource.h"
 #include "plSecureStream.h"

Sources/Plasma/PubUtilLib/plFile/plStreamSource.h

@@ -43,8 +43,8 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
 #define plStreamSource_h_inc
 
 #include <map>
+#include <string>
 #include "hsStream.h"
-#include "hsStlUtils.h"
 
 // A class for holding and accessing file streams. The preloader will insert
 // files in here once they are loaded. In internal builds, if a requested file