Ultimate Boot CD

Hi, I attach here my suggested updates for the scripts.
I have added a command to make the definition file writeable before attempting deleting and updating them. I restore them to read only at the end as to maintain the CD read only status.
I also revised the parsing of the fprot definitions locator as it seems different than what the original file expected. The script seems to work fine now.

Pietro

Thank you.

I won't be including the new "chmod" changes for the following reasons:

1. I feel the chmod should be done by the user depending on the situation eg. the scripts need to have +x permissions as specified in the readme, and if UBCD content is on USB memory stick, it is not necessary to +w and -w.

2. The scripts need to be compatible with Win32, and I don't find it compelling enough to include a new "chmod.exe" in tools/win32/unxutils.

However, I will be including the new fprot definition parsing in the upcoming minor release.

Once again, thanks for the contribution.