- Up to 5.1.1

- Up to 5.1.1
- Obsoletes separate unix2dos package
- Removed patches 0, 1, 4 and 5: applied upstream
- Commented patches 3 and 6: probably applied upstream but unclear due to significant changes in new version, do not apply cleanly
- Updated upstream project URLs

Changed files:
    dos2unix-manpage-update.patch -> 1.2
    dos2unix-preserve-file-modes.patch -> 1.2
    dos2unix-safeconv.patch -> 1.2
    dos2unix-segfault.patch -> 1.3
    dos2unix.patch -> 1.3
    dos2unix.spec -> 1.23