* src/SDCCpeeph.c: made labelHashEntry global, made pcDistance, FBYNAME static,

* src/SDCCpeeph.c: made labelHashEntry global, made pcDistance, FBYNAME static,
(pcDistance): made static, use isComment and isLabel,
(deadMove): added,
(getLabelRef): added, extracted from labelRefCount(),
(labelRefCount): use new getLabelRef(),
(callFuncByName): made static, added deadMove, use isComment and isLabel,
(newPeepRule): made static, set isLabel,
(isLabelDefinition): added parameter isPeepRule to allow '%' in labels from peephole rules,
(buildLabelRefCountHash): speed up by running isLabelDefinition() only when isComment or isLabel is set
* src/SDCCpeeph.h: added "isLabel" and "visited" to struct lineNode, added labelHashEntry, isLabelDefinition, labelHash and getLabelRef to make them global
* src/mcs51/peep.h: added
* src/mcs51/peep.c: added, implements mcs51DeadMove()
* src/port.h: added peep->deadMove to port structure
* src/mcs51/main.c: initialize peep->deadMove with mcs51DeadMove
* src/mcs51/peeph.def: renumbered rule 300 to 400, added new rule 300 deadMove, finally removed no. 1 and 2
* src/mcs51/gen.c,
* src/pic/gen.c,
* src/z80/gen.c,
* src/z80/ralloc.c,
* src/pic16/gen.c,
* src/ds390/gen.c,
* src/hc08/gen.c: mark lines with isComment or isLabel
* sim/ucsim/s51.src/uc390hw.cc: don't waist 65535 ticks before CKRDY
* .version,
* sdcc.spec: bumped version to 2.6.3

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@4526 4a8a32a2-be11-0410-ad9d-d568d2c75423