Fixed bx_shadow_bool_c method set() to make it work with initial value "1".
This fixes the floppy malfunction after restore and maybe other issues. The
buggy code failed to clear the DMA controller mask bits and the floppy DMA
requests never arrived at the CPU.


git-svn-id: svn://svn.code.sf.net/p/bochs/code/trunk@12325 6c8e4198-a580-4521-a02f-c9ae86df1db9