Changes

• refactor sendinput for better performance and scalability
• add sendinput_io to execute command from file or stdin for large commands
• switch to gcc build with smaller executable

Files

• sendinput.7z: a 7z package with all files below
• sendinput_io_x64.exe: 64-bit sendinput_io
• sendinput_io_x86.exe: 32-bit sendinput_io
• sendinput_x64.exe: 64-bit sendinput
• sendinput_x86.exe: 32-bit sendinput