[libvirt] [PATCH]: Add default pool types

[Chris Lalancette]

Chris Lalancette wrote:
> As suggested by danpb, to fix up the regression caused by last week's VIR_ENUM
> cleanup patch, add a ".defaultFormat" member to .poolOptions.  In
> storage_conf.c, if virXPathString(/pool/source/format/@type) returns NULL, then
> set the pool type to .defaultFormat; otherwise, lookup the type via
> formatFromString.

Committed this.

Chris Lalancette