- scriptified A_SpawnFly.

- added support for global variables to the code generator - not the compiler, though. For the handful of entries this is needed for it may just as well be done manually. So far FLevelLocals level is the only one being exported.
- fixed: The VM disassembler truncated 64 bit pointers to 15 digits because the output buffer was too small.
- resolve entire FxSequences instead of aborting on the first failed entry. This allows to output all errors at once.

src/scripting/vm/vmbuilder.h

@@ -30,6 +30,8 @@ public:
 
 	// Returns the constant register holding the value.
 	int GetConstantInt(int val);
+	int GetConstantInt(size_t val) { return GetConstantInt(int(val)); }
+	int GetConstantInt(unsigned val) { return GetConstantInt(int(val)); }
 	int GetConstantFloat(double val);
 	int GetConstantAddress(void *ptr, VM_ATAG tag);
 	int GetConstantString(FString str);