Add missing CPU field, change field length check

Fixes #54
Set var for rate type
Get rid of metric variable, get rid of continue
Default send location to http://bosun/

Optionally disable metadata sending. This is work to allow bosun to stop
relaying :4242 traffic.
Don't fatal on bad external tag

fixes #62
More verbose bad tag errors
Return, don't print, scan error
If /sys/class/net/if/speed exists and is readable, use it to populate the linux.net.ifspeed and os.net.ifspeed metric
Monitor basic jvm GC activity on hbase region servers
Don't shadow type var, style
Merge pull request #65 from StackExchange/jmx_gc

Monitor basic jvm GC activity on hbase region servers
Fix cisco CPU collection

Two changes. 1) Use a big.Int instead of a float64 during asn1.Unmarshal
because floats are not listed as having support in the go docs. 2) Fallback
to an additional .1 on the CPU oid because that's how it looks like it
works based on snmpwalk data.
Merge branch 'master' of github.com:StackExchange/scollector
Capture if redis instance is slave or not from role

Formatting change for redisFields is what go fmt is doing .. shrug
Fix puppet collector to get the time from last_run

...instead of config which was just stupid.
Added win.system.processes, win.system.uptime, and os.system.uptime
Fixes issues mentioned on pull request
Merge pull request #66 from StackExchange/gbray

Added win.system.processes, win.system.uptime, and os.system.uptime
Fix issues with win.disk metrics that use 100NS sample time
Add period to end of descriptions