* defaults.h (CONSTANT_ADDRESS_P): Provide a default definition.
        Make sure that it does not allow CONST_DOUBLEs.
        * doc/tm.texi (CONSTANT_ADDRESS_P): Update description.
        * config/avr/avr.h (CONSTANT_ADDRESS_P): Delete.
        * config/bfin/bfin.h (CONSTANT_ADDRESS_P): Delete.
        * config/cris/cris.h (CONSTANT_ADDRESS_P): Delete.
        * config/fr30/fr30.h (CONSTANT_ADDRESS_P): Delete.
        * config/frv/frv.h (CONSTANT_ADDRESS_P): Delete.
        * config/m32c/m32c.h (CONSTANT_ADDRESS_P): Delete.
        * config/m68hc11/m68hc11.h (CONSTANT_ADDRESS_P): Delete.
        * config/mep/mep.h (CONSTANT_ADDRESS_P): Delete.
        * config/mn10300/mn10300.h (CONSTANT_ADDRESS_P): Delete.
        * config/moxie/moxie.h (CONSTANT_ADDRESS_P): Delete.
        * config/pdp11/pdp11.h (CONSTANT_ADDRESS_P): Delete.
        * config/picochip/picochip.h (CONSTANT_ADDRESS_P): Delete.
        * config/score/score.h (CONSTANT_ADDRESS_P): Delete.
        * config/stormy16/stormy16.h (CONSTANT_ADDRESS_P): Delete.

From-SVN: r153894