This changes allow us to parse Go+BoringCrypto which formatted in <GoVersion>b<BoringCryptoVersion> so that we can surpress `Version of Go is too old for this version of Delve` error.
Fixes#2711
* service/dap: add panic and throw text to stopped event
We can add more information to the stopped events on errors using
the `Text` field in the stopped event. We already use this to display
the runtime errors. Adding this information to the stopped reason will
also help to show the user additional info when a stopped event is not
associated with a particular goroutine.
Before doing anything check that the version of Go is compatible with
the current version of Delve.
This will improve the error message in the case that another change as
disruptive as Go1.11 dwarf compression, happens.
