Include linter class MD5 in linter version
Include linter class MD5 in linter version

Summary:
People constantly forget to bump the linter version and I don't see a way how to stop it.
This may bump the version even if it wouldn't be required but let's rather undercache than overcache.

Test Plan: `var_dump($version)`.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D5129

haskell-infra/arcanist,hach-que/arcanist,dguo-coursera/arcanist,uber/arcanist,coursera/arcanist,wxstars/arcanist,fivestars/arcanist,julkiewicz/arcanist,eSpark/arcanist,phacility/arcanist,wikimedia/phabricator-arcanist,zhihu/arcanist,kevinseelbach/arcanist,codelabs-ch/arcanist,PageUpPeopleOrg/arcanist-patches,uber/arcanist,phacility/arcanist,wharris/arcanist,haskell-infra/arcanist,jra3/arcanist,memsql/arcanist,wxstars/arcanist,alexmv/arcanist,chundongwang/arcanist,chundongwang/arcanist,wharris/arcanist,Symplicity/arcanist,phacility/arcanist,zhihu/arcanist,codelabs-ch/arcanist,wxstars/arcanist,KieranHayes/arcanist,KieranHayes/arcanist,sneakpeeq/arcanist,wharris/arcanist,jra3/arcanist,zhihu/arcanist,jra3/arcanist,alexmv/arcanist,memsql/arcanist,fivestars/arcanist,Khan/arcanist,phacility/arcanist,uber/arcanist,folsom-labs/arcanist,fivestars/arcanist,julkiewicz/arcanist,memsql/arcanist,folsom-labs/arcanist,dguo-coursera/arcanist,eSpark/arcanist,r4nt/arcanist,wharris/arcanist,sneakpeeq/arcanist,aik099/arcanist,jra3/arcanist,r4nt/arcanist,eSpark/arcanist,uber/arcanist,chundongwang/arcanist,folsom-labs/arcanist,r4nt/arcanist,calblueprint/arcanist,haskell-infra/arcanist,KieranHayes/arcanist,haskell-infra/arcanist,PageUpPeopleOrg/arcanist-patches,alexmv/arcanist,KieranHayes/arcanist,Symplicity/arcanist,hach-que/arcanist,calblueprint/arcanist,aik099/arcanist,calblueprint/arcanist,sneakpeeq/arcanist,wikimedia/phabricator-arcanist,hach-que/arcanist,Khan/arcanist,dguo-coursera/arcanist,julkiewicz/arcanist,phacility/arcanist,hach-que/arcanist,codelabs-ch/arcanist,chundongwang/arcanist,wikimedia/phabricator-arcanist,coursera/arcanist,kevinseelbach/arcanist,eSpark/arcanist,codelabs-ch/arcanist,Symplicity/arcanist,folsom-labs/arcanist,fivestars/arcanist,r4nt/arcanist,kevinseelbach/arcanist,codelabs-ch/arcanist,Khan/arcanist,aik099/arcanist,dguo-coursera/arcanist,Khan/arcanist,alexmv/arcanist,kevinseelbach/arcanist,sneakpeeq/arcanist,aik099/arcanist,coursera/arcanist,PageUpPeopleOrg/arcanist-patches,PageUpPeopleOrg/arcanist-patches,wxstars/arcanist,julkiewicz/arcanist,zhihu/arcanist,Symplicity/arcanist,wikimedia/phabricator-arcanist,calblueprint/arcanist,coursera/arcanist,memsql/arcanist