Fix how remotely debugged process end is detected.

[DEVELOPMENT ENVIRONMENT]
* BUG: Debugger: Watch a remotely debugged process through the lock file
  it creates, instead of relying on '/proc' which is not reliable and
  Linux-specific.
* BUG: Save the cursor position in the history when the procedure list is used.

app/src/gambas3/.src/Debug/Design.module

@@ -1292,8 +1292,17 @@ End
 
 Public Sub TimerRemote_Timer()
   
+  Dim sPath As String
+  Dim hLock As File
+  
   If $iProcessId Then
-    If Not Exist("/proc" &/ CStr($iProcessId)) Then Stop()
+    sPath = File.SetExt($sFifo, "lock")
+    Try hLock = Lock sPath
+    If Not Error Then 
+      Stop()
+      Unlock hLock
+      Try Kill sPath
+    Endif
   Endif
   
 End

app/src/gambas3/.src/Editor/Code/FEditor.class

@@ -2976,6 +2976,7 @@ Public Sub GotoFunction(iLine As Integer)
   iCol = String.Len($hEditor[iLine].Text) - String.Len(LTrim($hEditor[iLine].Text))
 
   Me.GotoCenter(iLine, iCol) ', True)
+  CPosition.SaveCurrent(Me)
   $hEditor.SetFocus
 
 End

app/src/gambas3/.src/Editor/Code/FTextEditor.class

@@ -1168,6 +1168,7 @@ End
 Private Sub GotoProc(iLine As Integer)
   
   $hEditor.GotoCenter(0, iLine)
+  CPosition.SaveCurrent(Me)
   
 End