Software farm: Don't crash when installing an example if its symbolic link alread exists.

[DEVELOPMENT ENVIRONMENT]
* BUG: Software farm: Don't crash when installing an example if its symbolic link alread exists.
* BUG: Project tree: CTRL + double-click is now triggered only on source files.

app/src/gambas3/.src/FMain.class

@@ -146,6 +146,7 @@ Public Sub tvwProject_Activate()
   Dim sMime As String
   Dim hProgList As DesktopFile[]
   Dim hProcess As Process
+  Dim sKeyClass As String
   
   sKey = tvwProject.Key
   
@@ -153,8 +154,9 @@ Public Sub tvwProject_Activate()
     tvwProject[sKey].Expanded = True
     If CanEdit(sKey) Then
       If $bCtrl Then
-        If File.Ext(sKey) <> "module" Then
+        If Project.IsSourcePath(sKey) And If File.Ext(sKey) <> "module" Then
-          sKey = File.SetExt(sKey, "class")
+          sKeyClass = File.SetExt(sKey, "class")
+          If Project.IsSourcePath(sKeyClass) Then sKey = sKeyClass
         Endif
       Endif
       Project.OpenFile(sKey,,, True)

app/src/gambas3/.src/Project/Farm/CSoftware.class

@@ -442,6 +442,7 @@ Public Sub Install(Optional bJustDownload As Boolean) As String
 
   If LCase(Vendor) <> "example" And If Tags.Exist("example", gb.IgnoreCase) Then
     Try Mkdir File.SetName(sSrcDir, "example")
+    Try Kill File.SetName(sSrcDir, "example") &/ sName
     Link ".." &/ File.Name(sSrcDir) &/ sName To File.SetName(sSrcDir, "example") &/ sName
   Endif