[Varnish] #1310: varnish shouldn't allow "-" in sub names

[Varnish]

#1310: varnish shouldn't allow "-" in sub names
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 Reporter:  scoof     |      Owner:
     Type:  defect    |     Status:  new
 Priority:  normal    |  Milestone:
Component:  varnishd  |    Version:  3.0.3
 Severity:  normal    |   Keywords:
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 It confuses the C compiler

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1310>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator