v1.70.2
build: modernize Go usage
build: remove build constraint syntax for go 1.16 and older
rc: convert options to new style
rc: fix debug/* commands not being available over unix sockets
rc: Add GetFsNamedFileOK to get an fs which could also be a file
fs/cache: fix parent not getting pinned when remote is a file
rc: add option blocks parameter to options/get and options/info
build: fix govet lint errors with golangci-lint v1.60.1
rc: fix core/command giving 500 internal error - fixes #4914
rc: fix default value of --metrics-addr
fs/rc: add more infrastructure to help writing rc functions
config: fixed issues with flags/options set by environment vars.