- Default value for LOGFILE with note about type of quotes to use.

- Default value for LOGFILE with note about type of quotes to use.
- Modified method of getting list of sources and patches. Now %%install
  section is redefined instead of %%prep. This is because not all
  packages have %%prep section.
- Tab replaced with space in "- Patches :" message. This fixes list of
  patches placed too far right.
- Logging implemented. And it's really cool ;)
- Fixed "nourl" function. It returned only last argument.

Changed files:
    builder.sh -> 1.91