How to change all the UUIDs in VirtualBox

[mark95]

I want to build VirtualBox for another product. In order to avoid conflicts with official VirtualBox,
so i need to change some setting of VirtualBox. First of all, the UUIDs in "src\VBox\Main\idl\VirtualBox.xidl"
and other xsl files.

so how to change all the UUIDs, thx.