Some work on the seek latency feature
- temporarily disabled seek latency support for ATAPI command 0x2b until the
  seeking status is implemented correctly
- fix for the MSVC compilation fix (result was always 0.0)


git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@12203 6c8e4198-a580-4521-a02f-c9ae86df1db9