Add JSON load code to wt.exe on Windows.
Windows Fixes

- Only test_compact.py, and test_backup03.py fail have the only unknown failures
Port all examples, most tests, and wtperf to Windows

Added windows_shim to emulate most functions
Merge pull request #1286 from markbenvenuto/win_fixes

Windows Fixes
Merge pull request #1287 from markbenvenuto/windows_test_fixes

Port all examples, most tests, and wtperf to Windows
Fix build warnings from wtperf.
Fix backward ifdef.
Fix a bug with index cursors that could lead to cursors not being automatically closed by WT_SESSION::close.
Update.
Commit 752f6a1 removes the Windows version of posix_memalign, which
means we can share the os_posix/os_alloc.c file between the POSIX and
Windows ports.
Fix _wt_epoch

Cleanup SConstruct, and add more details to os_open errors
Merge pull request #1289 from markbenvenuto/epoch_fix

Fix _wt_epoch
Match changes in Win, mention the system call name.
update