[tex-live] pdfopen: minor portability fix

[Vladimir Volovich]

Hi!

i submitted a minor portability fix to pdfopen (change 8231):

        removed -Wall option from AM_CFLAGS in Makefile.{am,in}
        because it is GCC-specific and causes an error for xlc compiler

Taco, please merge it with your master sources.

Best,
v.