fix build output

As you could have multiple messages per line with streams, don't display `\r`

```
....
checking locale.h presence... yes
checking for locale.h... yes
checking stddef.h usability... yes
checking stddef.h presence... yes
checking for stddef.h... yes
checking syslog.h usability... yes
checking syslog.h presence... yes
checking for syslog.h... yes
checking sys/file.h usability... yes
checking sys/file.h presence... yes
checking for sys/file.h... yes
checking sys/time.h usability... yes
checking sys/time.h presence... yes
checking for sys/time.h... yes
checking assert.h usability... yes
checking assert.h presence... yes
checking for assert.h... yes
checking langinfo.h usability... yes
checking langinfo.h presence... yes
checking for langinfo.h... yes
checking libgen.h usability... yes
checking libgen.h presence... yes
checking for libgen.h... yes
checking signal.h usability... yes
checking signal.h presence... yes
checking for signal.h... yes
checking sys/mman.h usability... yes
checking sys/mman.h presence... yes
checking for sys/mman.h... yes
checking sys/resource.h usability... yes
checking sys/resource.h presence... yes
checking for sys/resource.h... yes
checking sys/utsname.h usability... yes
checking sys/utsname.h presence... yes
...
```