new block cache and much more...

- more reliable code invalidation detection
- blocks aren't stopped at any branch, but are being followed
if possible to get larger blocks
- idle loop recognition
- optimised literal loads, load/store cycle counting
 and loads/stores from constant addresses

src/Config.cpp

@@ -37,6 +37,7 @@ int GL_Antialias;
 #ifdef JIT_ENABLED
 bool JIT_Enable = false;
 int JIT_MaxBlockSize = 12;
+bool JIT_BrancheOptimisations = true;
 #endif
 
 ConfigEntry ConfigFile[] =
@@ -50,6 +51,7 @@ ConfigEntry ConfigFile[] =
 #ifdef JIT_ENABLED
     {"JIT_Enable", 0, &JIT_Enable, 0, NULL, 0},
     {"JIT_MaxBlockSize", 0, &JIT_MaxBlockSize, 10, NULL, 0},
+    {"JIT_BrancheOptimisations", 0, &JIT_BrancheOptimisations, 1, NULL, 0},
 #endif
 
     {"", -1, NULL, 0, NULL, 0}