Update i386-dis.c from commits before GPLv3 switch

Update i386-dis.c again using binutils files from CVS:
include/opcode/i386.h r1.78 and opcodes/i386-dis.c r1.126.

These are the last versions using GPL v2+.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6744 c046a42c-6fe2-441c-8c8c-71466251a162