Remove <values.h> inclusions, no-longer-needed MAXINT definitions.

configure

configure.in

contrib/odbc/odbc.c

src/backend/optimizer/geqo/geqo_eval.c

src/backend/postmaster/postmaster.c

src/backend/utils/adt/float.c

src/backend/utils/adt/nabstime.c

src/backend/utils/adt/varbit.c

src/include/config.h.in

src/include/utils/varbit.h