* src/SDCCast.c (decorateType): disabled a transformation I added in

* src/SDCCast.c (decorateType): disabled a transformation I added in
revision 1.188 (access to fields of a structure at an absolute address);
it breaks with bitfields, extern declarations, and gcse analysis.
* src/SDCCopt.c (isLocalWithoutDef): if ADDRESS_OF applied to a symbol, it
could be assigned through a pointer, so don't complain.
* src/SDCCast.c (astErrors),
* src/SDCCast.h,
* src/SDCCglue.c (emitRegularMap): fixed bug #847813

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3030 4a8a32a2-be11-0410-ad9d-d568d2c75423