Change allocation strategy for memory block tracking and track begin/end rather than begin/size

include/uc_priv.h

@@ -16,8 +16,8 @@
 QTAILQ_HEAD(CPUTailQ, CPUState);
 
 typedef struct MemoryBlock {
-   uint64_t begin;
-   size_t size;
+   uint64_t begin;  //inclusive
+   uint64_t end;    //exclusive
    uint32_t perms;
 } MemoryBlock;
 
@@ -67,6 +67,9 @@ struct hook_struct {
 // extend memory to keep 32 more hooks each time
 #define HOOK_SIZE 32
 
+//relloc increment, KEEP THIS A POWER OF 2!
+#define MEM_BLOCK_INCR 32
+
 struct uc_struct {
     uc_arch arch;
     uc_mode mode;