count requests in (fast|http)router

[prymitive]

This patch restores requests counting in fastrouter and httprouter after porting to new api

Concurrency Level:      4
Time taken for tests:   1.968 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      97412000 bytes
HTML transferred:       97197000 bytes
Requests per second:    508.17 [#/sec] (mean)
Time per request:       7.871 [ms] (mean)
Time per request:       1.968 [ms] (mean, across all concurrent requests)
Transfer rate:          48341.72 [Kbytes/sec] received

"nodes": [
    {
        "name": "172.16.200.55:3001",
        "modifier1": 0,
        "modifier2": 0,
        "last_check": 1351504817,
        "requests": 1000,
        "tx": 0,
        "cores": 2,
        "load": 0,
        "weight": 1,
        "wrr": 0,
        "ref": 0,
        "failcnt": 0,
        "death_mark": 0
    }
]

[prymitive]

Wait a second, I'll have weird stats for high concurrency levels

[prymitive]

I almost got the rebase procedure right.

Concurrency Level:      700
Time taken for tests:   20.987 seconds
Complete requests:      10000
Failed requests:        0
Write errors:           0
Total transferred:      974258010 bytes
HTML transferred:       972107580 bytes
Requests per second:    476.49 [#/sec] (mean)
Time per request:       1469.067 [ms] (mean)
Time per request:       2.099 [ms] (mean, across all concurrent requests)
Transfer rate:          45334.68 [Kbytes/sec] received

Fastrouter:
"nodes": [
    {
        "name": "172.16.200.55:3001",
        "modifier1": 0,
        "modifier2": 0,
        "last_check": 1351507151,
        "requests": 10002,
        "tx": 0,
        "cores": 2,
        "load": 0,
        "weight": 1,
        "wrr": 0,
        "ref": 0,
        "failcnt": 0,
        "death_mark": 0
    }
]

Backend:
"requests":5240,
"requests":4762,

So FastRouter and backend counters are consistent, I guess that those 2 extra requests are retries or something (although I don't have any errors in my logs)