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58eb977c0d
The firstboot infrastructure used to give the firstboot scripts some cryptic names which were impossible to relate to the actions they were supposed to take. This patch reworks the scheme such that the caller registering a firstboot script has to provide a descriptive name for the action. That name, with non-alphanumeric characters replaced with dashes, prefixed by the serial number, is then used as the name of the script, e.g. 0004-install-gcc or 0002-msiexec--i-foo-msi.bat OTOH the numbering becomes internal to the API, i.e. the scripts are numbered and executed in the order they are registered. This greatly facilitates debugging and troubleshooting in case when there are multiple firstboot scripts. Signed-off-by: Roman Kagan <rkagan@parallels.com>