add launchpad bug reports without comments

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+CPU not support 32-bit stack in 32-bit unreal mode
+
+QEMU version 5.0.0 supports 32-bit and 16-bit unreal mode. Great!
+Unfortunately, QEMU does not support 32-bit stack in unreal 32-bit mode.
+After the INT instruction, the stack is switched to 16-bit, which should not be the case. 
+At BOCHS, my code works 100%. At QEMU not works.
+
+Sample code to find out:
+
+use32
+cli
+mov ax,cs
+shl eax,16
+mov ax,NewInt80h
+mov [IDT32+4*80h],eax
+mov edx,esp
+mov esp,0x10000
+int 80h
+NewInt80h:
+xchg esp,edx
+cmp edx,0x10000-6
+jnz IsStack16Bit
+
+Stack selector loaded from GDT:
+GDT:
+real32_GDT            
+dq 0
+dw 0xFFFF,0x0000,9A00h,0xCF     ; 32-bit code descriptor
+dw 0xFFFF,0x0000,9200h,0x8F     ;   4 GB data descriptor
+dw 0xFFFF,0x0000,9A00h,0x00     ; 16-bit code descriptor
+dw 0xFFFF,0x0000,9200h,0xCF     ; 32-bit data descriptor stack
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