* src/SDCCpeeph.c (replaceRule): support empty replacement peephole

* src/SDCCpeeph.c (replaceRule): support empty replacement peephole
rules
* src/SDCCmain.c,
* src/SDCCglobl.h,
* src/SDCCpeeph.c (getPeepLine): new option --no-peep-comments omits
comments from the peephole optimizer replacement rules
* src/SDCCmem.c (printAllocInfoSeg): give actual location of spilled
symbols
* src/SDCCcse.c (updateSpillLocation),
* src/SDCCopt.c (killDeadCode, findReqv): better tracking of register
equivalents
* src/hc08/ralloc.c (regTypeNum): pseudo symbols must be in DATA only
* src/hc08/main.c (_hc08_finaliseOptions): made pointers to stack
objects far pointers

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3299 4a8a32a2-be11-0410-ad9d-d568d2c75423