Source control enhancements

Source control enhancements include the following:

The Library painter shows the SCC status in a column that can be sorted
The System Tree no longer opens or closes randomly for an SCC workspace
Performance improvements to the GetLatestVersion functionality

To improve performance, you can prevent objects in the workspace from being refreshed within a specified time of an earlier refresh or GetLatestVersion call. You do this by adding the “sccpbgrefresh” setting to the [Library] section of the PK.INI file and assigning a value to indicate the time period in minutes that must elapse before a new refresh call is made. You can modify this setting independently of the workspace’s RefreshRate property.

If you use Serena PVCS source control systems, you can add the “sccmaxarraysize” setting to the [Library] section of the PK.INI file to cut down on the number of API calls to the source control server. You can experiment with the “sccpbgrefresh” and “sccmaxarraysize” settings to determine the optimum values for your environment. A typical starting point for optimization would be:
```
[Library]
sccpbgrefresh=20
sccmaxarraysize=100
```
For these settings, the cached PKG files are considered valid for 20 minutes, and the maximum number of API calls for each invocation of GetLatestVerssion is 100.
You can prevent the display of a message box when you open an object that is not checked out

You can clear the “Show warning when opening objects not checked out” check box on the Source Control tab of the Workspace Properties dialog box to prevent warning messages from displaying when an object is not checked out to you. If you do not manually clear this check box, you can still cause it to be cleared automatically by selecting the “Do not show this message again” check box on any warning dialog box that displays when you try to open an object under source control that is not checked out.

If you want to re-establish the warning messages, select the “Show warning when opening objects not checked out” check box on the Source Control tab of the Workspace Properties dialog box.