add megaraid.
welcome to 5.18
- Add some debugging code to print incorrect formats.
- Fix "long" formats which in magic "long" == 32 bit, which is not
  what "long" means in "C".
reduce strength of windows cursors so that they don't win over Targa files
(Christoph Biedl)
fix compilation without fmt debug.
Improve library detection, (Christoph Biedl)
capitalize sparc
remove extra line (Christoph Biedl)
raise the strength of the targa magic, instead of dropping the cursor magic
so that they does not get recognized as lotus 123 files. From Christoph Biedl