Use "m_" prefix for wxExecuteData members

No real changes, just rename the members to use the standard prefix
which is more consistent with the rest of wxWidgets and also allows to
avoid both the hacks with "foo_" names for the arguments of some
functions that were used to avoid the conflicts with member "foo" and
at least one remaining shadowing warning for "exitcode".

include/wx/unix/private/execute.h

@@ -27,17 +27,17 @@ class wxExecuteData
 public:
     wxExecuteData()
     {
-        flags =
-        pid = 0;
-        exitcode = -1;
+        m_flags =
+        m_pid = 0;
+        m_exitcode = -1;
 
-        process = NULL;
+        m_process = NULL;
 
-        syncEventLoop = NULL;
+        m_syncEventLoop = NULL;
 
 #if wxUSE_STREAMS
-        fdOut =
-        fdErr = wxPipe::INVALID_FD;
+        m_fdOut =
+        m_fdErr = wxPipe::INVALID_FD;
 #endif // wxUSE_STREAMS
     }
 
@@ -51,36 +51,36 @@ public:
     void OnExit(int exitcode);
 
     // Return true if we should (or already did) redirect the child IO.
-    bool IsRedirected() const { return process && process->IsRedirected(); }
+    bool IsRedirected() const { return m_process && m_process->IsRedirected(); }
 
 
     // wxExecute() flags
-    int flags;
+    int m_flags;
 
     // the pid of the child process
-    int pid;
+    int m_pid;
 
     // The exit code of the process, set once the child terminates.
-    int exitcode;
+    int m_exitcode;
 
     // the associated process object or NULL
-    wxProcess *process;
+    wxProcess *m_process;
 
     // Local event loop used to wait for the child process termination in
     // synchronous execution case. We can't create it ourselves as its exact
     // type depends on the application kind (console/GUI), so we rely on
     // wxAppTraits setting up this pointer to point to the appropriate object.
-    wxEventLoopBase *syncEventLoop;
+    wxEventLoopBase *m_syncEventLoop;
 
 #if wxUSE_STREAMS
     // the input buffer bufOut is connected to stdout, this is why it is
     // called bufOut and not bufIn
-    wxStreamTempInputBuffer bufOut,
-                            bufErr;
+    wxStreamTempInputBuffer m_bufOut,
+                            m_bufErr;
 
     // the corresponding FDs, -1 if not redirected
-    int fdOut,
-        fdErr;
+    int m_fdOut,
+        m_fdErr;
 #endif // wxUSE_STREAMS