Wrap sGlobalRawMemory in AIThreadSafe.

This is accessed by different threads.
Other globals like it might also be
accessed by different threads, this has
to be investigated.

indra/llimage/llimage.cpp

@@ -246,7 +246,7 @@ U8* LLImageBase::allocateDataSize(S32 width, S32 height, S32 ncomponents, S32 si
 // LLImageRaw
 //---------------------------------------------------------------------------
 
-S32 LLImageRaw::sGlobalRawMemory = 0;
+AITHREADSAFESIMPLE(S32, LLImageRaw::sGlobalRawMemory, );
 S32 LLImageRaw::sRawImageCount = 0;
 S32 LLImageRaw::sRawImageCachedCount = 0;
 
@@ -296,23 +296,25 @@ LLImageRaw::~LLImageRaw()
 U8* LLImageRaw::allocateData(S32 size)
 {
 	U8* res = LLImageBase::allocateData(size);
-	sGlobalRawMemory += getDataSize();
+	*AIAccess<S32>(sGlobalRawMemory) += getDataSize();
 	return res;
 }
 
 // virtual
 U8* LLImageRaw::reallocateData(S32 size)
 {
-	sGlobalRawMemory -= getDataSize();
+	S32 old_data_size = getDataSize();
 	U8* res = LLImageBase::reallocateData(size);
-	sGlobalRawMemory += getDataSize();
+	*AIAccess<S32>(sGlobalRawMemory) += getDataSize() - old_data_size;
 	return res;
 }
 
 // virtual
 void LLImageRaw::deleteData()
 {
-	sGlobalRawMemory -= getDataSize();
+	{
+		*AIAccess<S32>(sGlobalRawMemory) -= getDataSize();
+	}
 	LLImageBase::deleteData();
 }
 
@@ -328,7 +330,7 @@ void LLImageRaw::setDataAndSize(U8 *data, S32 width, S32 height, S8 components)
 	LLImageBase::setSize(width, height, components) ;
 	LLImageBase::setDataAndSize(data, width * height * components) ;
 	
-	sGlobalRawMemory += getDataSize();
+	*AIAccess<S32>(sGlobalRawMemory) += getDataSize();
 }
 
 BOOL LLImageRaw::resize(U16 width, U16 height, S8 components)