IDA Pro 6.5 support

What's new:
- Proper multi-threaded support 
- Better PyObject reference counting with ref_t and newref_t helper classes
- Improved the pywraps/deployment script
- Added IDAViewWrapper class and example
- Added idc.GetDisasmEx()
- Added idc.AddSegEx()
- Added idc.GetLocalTinfo()
- Added idc.ApplyType()
- Updated type information implementation
- Introduced the idaapi.require() - see http://www.hexblog.com/?p=749
- set REMOVE_CWD_SYS_PATH=1 by default in python.cfg (remove current directory from the import search path).

Various bugfixes:
- fixed various memory leaks
- asklong/askaddr/asksel (and corresponding idc.py functions) were returning results truncated to 32 bits in IDA64
- fix wrong documentation for idc.SizeOf
- GetFloat/GetDouble functions did not take into account endianness of the processor
- idaapi.NO_PROCESS was not defined, and was causing GetProcessPid() to fail
- idc.py: insert escape characters to string parameter when call Eval()
- idc.SaveFile/savefile were always overwriting an existing file instead of writing only the new data
- PluginForm.Close() wasn't passing its arguments to the delegate function, resulting in an error.

pywraps/py_expr.hpp

@@ -9,10 +9,12 @@ struct py_idcfunc_ctx_t
   int nargs;
   py_idcfunc_ctx_t(PyObject *py_func, const char *name, int nargs): py_func(py_func), name(name), nargs(nargs)
   {
+    PYW_GIL_CHECK_LOCKED_SCOPE();
     Py_INCREF(py_func);
   }
   ~py_idcfunc_ctx_t()
   {
+    PYW_GIL_CHECK_LOCKED_SCOPE();
     Py_DECREF(py_func);
   }
 };
@@ -26,25 +28,25 @@ static error_t py_call_idc_func(
   // Convert IDC arguments to Python list
   py_idcfunc_ctx_t *ctx = (py_idcfunc_ctx_t *)_ctx;
   int cvt;
-  ppyobject_vec_t pargs;
   char errbuf[MAXSTR];
-  if ( !pyw_convert_idc_args(argv, ctx->nargs, pargs, NULL, errbuf, sizeof(errbuf)) )
+
+  PYW_GIL_CHECK_LOCKED_SCOPE();
+  ref_vec_t pargs;
+  if ( !pyw_convert_idc_args(argv, ctx->nargs, pargs, true, errbuf, sizeof(errbuf)) )
   {
     // Error during conversion? Create an IDC exception
     return PyW_CreateIdcException(r, errbuf);
   }
 
   // Call the Python function
-  PYW_GIL_ENSURE;
-  PyObject *py_result = PyObject_CallObject(
-                            ctx->py_func,
-                            pargs.empty() ? NULL : pargs[0]);
-  
+  newref_t py_result(PyObject_CallObject(
+                             ctx->py_func,
+                             pargs.empty() ? NULL : pargs[0].o));
+
   error_t err;
   if ( PyW_GetError(errbuf, sizeof(errbuf)) )
   {
     err = PyW_CreateIdcException(r, errbuf);
-    Py_XDECREF(py_result);
   }
   else
   {
@@ -55,13 +57,7 @@ static error_t py_call_idc_func(
       err = PyW_CreateIdcException(r, "ERROR: bad return value");
     else
       err = eOk;
-    if ( cvt != CIP_OK_NODECREF )
-      Py_XDECREF(py_result);
   }
-  PYW_GIL_RELEASE;
-
-  // Free the converted args
-  pyw_free_idc_args(pargs);
 
   return err;
 }
@@ -153,4 +149,4 @@ bool CompileLine_wrap(const char *line, char *errbuf, size_t errbufsize)
 }
 
 //</inline(py_expr)>
-#endif
+#endif