varz-to-influxdb: allow infinite restarts
Adding filter for git specific files

Change-Id: Ieecabcae439b9e08166bb416bd77789fb9dda3e5
Adding conditional compilation option to disable the ranking database.

Change-Id: I81371ca13710c687dc0ed48e5f8d0cc99ccb7b00
Merge branch 'krzsas-master'
dcs-rs-deploy: wipe /dcs/unpacked-new for proper resumability
dcs-rs-deploy: increase size of SSD volume, got a disk full recently
varz-to-influxdb: suffix all varz with the source hostname
source-backend: serve /varz for memleak/goroutine-leak monitoring
source-backend: read from all remaining goroutines when returning results early

This should fix a goroutine leak.
dcs-rs-deploy: update int-dcs-source-backend DNS record for monitoring
gofmt myvarint.go
add myPostingLast

This is useful for copying an entire posting list such as when merging
multiple index files into a new one.
add Concat() to merge two disjunctive index files
add ConcatN() to merge many disjunctive index files
change index.AddFile() to return errors instead of logging them
add dcs-package-importer

This is not done/sufficiently tested, but the idea is to incrementally
update an index by incurring the 2x storage cost.
update .gitignore to ignore binaries
Bugfix: sort readers by idmap as secondary criterion

Otherwise, the file name IDs are not strictly monotonically increasing,
which is expected by the index format for decoding.
return early if the posting list had only one entry
dcs-package-importer: link in pprof over HTTP for debugging