* doc/tm.texi (Costs): Remove DONT_REDUCE_ADDR documentation.

	* config/avr/avr.h: Remove comment regarding DONT_REDUCE_ADDR.
	* config/dsp16xx/dsp16xx.h: Likewise.
	* config/i386/i386.h: Likewise.
	* config/ip2k/ip2k.h: Likewise.

From-SVN: r67585