SERVER-2541 Windows performance counters implemented

[e-siedler]

Fully functional windows performance counters imlpemented as a mongod.exe Module.

See README. See jira SERVER-2541 for some additional notes.

• No Visual Studio project file have been updated. (I can't do that with VS Express).
• I didn't make use of this new "buildscripts/moduleconfig.py" infrastructure mostly because of my incompetence: new to scons, new to python, didn't like both. 8-)
• There is a new artifact that needs to be distributed along with mongod.exe: mongod.man. I didn't look into that (packaging).

Thanks

[e-siedler]

Tad, if you are interested in this patch please let me know if I can help. Best regards.

[benety]

https://jira.mongodb.org/browse/SERVER-2541

[monkey101]

this was closed by accident