Added sanity checks to the vmware4 and vvfat mode to avoid data corruption.
Some compilers need special options to pack structures correctly.
Added example for gcc 4.7+ on Windows to shortcut script.


git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@11917 6c8e4198-a580-4521-a02f-c9ae86df1db9