INT 31 P - DPMI 0.9+ - RESIZE DOS MEMORY BLOCK
        AX = 0102h
        BX = new block size in paragraphs
        DX = selector of block
Return: CF clear if successful
        CF set on error
            AX = DOS error code (07h,08h,09h) (see INT 21/AH=59h)
                 (DPMI 1.0+) DPMI error code (8011h,8022h) (see AX=0000h)
            BX = maximum block size (in paragraphs) possible
Notes:  increasing the size of a block past a 64K boundary will fail if the
          next descriptor in the LDT is already in use
        shrinking a block past a 64K boundary will cause some selectors to be
          freed; DPMI 1.0+ automatically zeros any segment registers containing
          a selector freed by this function
        not supported by MS Windows 3.0 in Standard mode