Changes

Bug 1231: Add Windows x86_64 test executable ; Use 'WinMain' for Windows
test-executable ; Use CustomInflate for Performance
- Use 'WinMain' for Windows test-executable
 This may have little difference than using std 'main' entry
- Add Windows x86_64 test executable
 Since the reporter claims the test executable works well
 on Windows i386, maybe utilizing a x86_64 test executable
 on same VM fixes the issue
- Use CustomInflate for Performance
 - Skips GZIP header
 - Adds own custom header [magic, deflate-size, inflate-size]
 - Own header allows simplified I/O read and deflation