Various windows build fixes:
- define NAME_MAX 255
- use audio_format_t structure from aout_instance_t
- memcpy string into szName[NAME_MAX]
- amem_sem_init(): use value variable in function CreateSemaphore()
- GetLastError() provides DWORD, so use %ld in msg_Err()
- amem_sem_wait(): use INFINITE iso 0L
- remove '#include "windows_audio_common.h"'