Changes to unittest framework breaking windows build

cl /Fobuild\win32\64\release\mongo\unittest\unittest.obj /c src\mongo\unittest\unittest.cpp /TP /nologo /EHsc /W3 /wd4355 /wd4800 /wd4267 /wd4244 /Z7 /errorReport:none /O2 /MT /GL /DBOOST_ALL_NO_LIB /D_SCONS /DMONGO_EXPOSE_MACROS /DSUPPORT_UTF8 /D_UNICODE /DUNICODE /D_CONSOLE /D_CRT_SECURE_NO_WARNINGS /DPSAPI_VERSION=1 /DJS_C_STRINGS_ARE_UTF8 /DNOEXECINFO /DXP_WIN /Ibuild\win32\64\release\third_party\boost /Isrc\third_party\boost /Ibuild\win32\64\release\third_party\pcre-8.30 /Isrc\third_party\pcre-8.30 /Ibuild\win32\64\release /Isrc /Ibuild\win32\64\release\mongo /Isrc\mongo "/IC:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Include" /ID:\10gen\buildslaves\mongo\Windows_64bit\winpcap\Include /Ibuild\win32\64\release\third_party\snappy /Isrc\third_party\snappy /Ibuild\win32\64\release\third_party\js-1.7 /Isrc\third_party\js-1.7

unittest.cpp

D:\10gen\buildslaves\mongo\Windows_64bit\mongo\src\mongo/util/debug_util.h(82) : error C3861: 'DebugBreak': identifier not found

D:\10gen\buildslaves\mongo\Windows_64bit\mongo\src\mongo/util/concurrency/mutex.h(125) : error C2146: syntax error : missing ';' before identifier '_cs'

D:\10gen\buildslaves\mongo\Windows_64bit\mongo\src\mongo/util/concurrency/mutex.h(125) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

D:\10gen\buildslaves\mongo\Windows_64bit\mongo\src\mongo/util/concurrency/mutex.h(125) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

D:\10gen\buildslaves\mongo\Windows_64bit\mongo\src\mongo/util/concurrency/mutex.h(127) : error C2065: '_cs' : undeclared identifier

D:\10gen\buildslaves\mongo\Windows_64bit\mongo\src\mongo/util/concurrency/mutex.h(127) : error C3861: 'InitializeCriticalSection': identifier not found

D:\10gen\buildslaves\mongo\Windows_64bit\mongo\src\mongo/util/concurrency/mutex.h(128) : error C2065: '_cs' : undeclared identifier

D:\10gen\buildslaves\mongo\Windows_64bit\mongo\src\mongo/util/concurrency/mutex.h(128) : error C3861: 'DeleteCriticalSection': identifier not found

D:\10gen\buildslaves\mongo\Windows_64bit\mongo\src\mongo/util/concurrency/mutex.h(131) : error C2065: '_cs' : undeclared identifier

D:\10gen\buildslaves\mongo\Windows_64bit\mongo\src\mongo/util/concurrency/mutex.h(131) : error C3861: 'EnterCriticalSection': identifier not found

D:\10gen\buildslaves\mongo\Windows_64bit\mongo\src\mongo/util/concurrency/mutex.h(143) : error C2065: '_cs' : undeclared identifier

D:\10gen\buildslaves\mongo\Windows_64bit\mongo\src\mongo/util/concurrency/mutex.h(143) : error C3861: 'LeaveCriticalSection': identifier not found

scons: *** [build\win32\64\release\mongo\unittest\unittest.obj] Error 2

scons: building terminated because of errors.