new format warnings in cppinit.c and ggc-page.c

[Brad Lucier]

This is during bootstrap on sparcv9-sun-solaris2.8, with 32-bit ints and
64-bit longs.

../../gcc/ggc-page.c:1506: warning: int format, different type arg (arg 3)
../../gcc/ggc-page.c:1506: warning: int format, different type arg (arg 3)
../../gcc/cppinit.c:877: warning: unsigned int format, different type arg (arg 4)
../../gcc/cppinit.c:877: warning: unsigned int format, different type arg (arg 5)
../../gcc/cppinit.c:897: warning: unsigned int format, different type arg (arg 4)
../../gcc/cppinit.c:897: warning: unsigned int format, different type arg (arg 5)

Brad