Increasing heap size to 256K.

jerry-core/mem/mem-allocator.h

@@ -43,6 +43,16 @@
  */
 #define MEM_COMPRESSED_POINTER_WIDTH (MEM_HEAP_OFFSET_LOG - MEM_ALIGNMENT_LOG)
 
+/**
+ * Compressed pointer value mask
+ */
+#define MEM_COMPRESSED_POINTER_MASK ((1ull << MEM_COMPRESSED_POINTER_WIDTH) - 1)
+
+/**
+ * Heap offset value mask
+ */
+#define MEM_HEAP_OFFSET_MASK ((1ull << MEM_HEAP_OFFSET_LOG) - 1)
+
 /**
  * Severity of a 'try give memory back' request
  *