Build process should build both 32-bit and 64-bit

[codedance]

Build process should build both 32-bit and 64-bit, and clearly label.

[Dan-Dongcheol-Lee]

By mistake, sorry for that.
A question regarding this, Which one would be better?

Example 1) build/${GOOS}_${GOARCH}/service.exe, updater.exe

• build/windows_386/service.exe, updater.exe
• build/windows_amd64/service.exe, updater.exe

Example 2) build/${GOOS}/service-${GOARCH}.exe, updater-${GOARCH}.exe

• build/windows/service-386.exe, updater-386.exe, service-amd64.exe, updater-amd64.exe

Cheers,
Dan.