* src/SDCCicode.c (geniCodeAdd),

* src/SDCCicode.c (geniCodeAdd),
* src/SDCCast.c (decorateType): fixed bug #857753 (need to be careful
with valFromType if type might be a pointer and host is big endian).
* src/SDCCast.c (decorateType): unary plus compatible with all arithmetic
types, not just integer types.
* src/SDCCsymt.c (addSymChain): clarified error message when symbol is
multiply defined with mismatching "at" address.

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3050 4a8a32a2-be11-0410-ad9d-d568d2c75423