Allow specifying a custom SymbolPackageFormat value to PackTask. And fix a typo in Paket.Restore.targets.
Allow specifying a custom SymbolPackageFormat value to PackTask.
And fix a typo in Paket.Restore.targets.

fsprojects/Paket,thinkbeforecoding/Paket,sergey-tihon/Paket,thinkbeforecoding/Paket,thinkbeforecoding/Paket,inosik/Paket,thinkbeforecoding/Paket,baronfel/Paket,baronfel/Paket,inosik/Paket,fsprojects/Paket,sergey-tihon/Paket