* src/SDCCloop.c (assignmentsToSym, loopInduction): cast argument of setToNull()...

* src/SDCCloop.c (assignmentsToSym, loopInduction): cast argument of setToNull() to (void *) to avoid gcc3.x's warning: "dereferencing type-punned pointer will break strict-aliasing rules"
Old LR behaviour is again default; Klaus' LR can be choosen by defining the environment variable LRKLAUS
* src/SDCCBBlock.h
* src/SDCCloop.c
* src/SDCCloop.h
* src/SDCClrange.c
* src/ds390/ralloc.c (spillThis): applied Klaus' patch

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@2923 4a8a32a2-be11-0410-ad9d-d568d2c75423