* src/SDCCsymt.h,

* src/SDCCsymt.h,
* src/SDCCsymt.c (changePointer, checkDecl, addSymChain): changed
parameter of changePointer() from symbol* to sym_link*
* src/SDCCast.c (decorateType): call changePointer() for CAST op
* src/SDCCsymt.c (compareType): void* type is castable to other
pointers, but not necesarily an exact match.
* src/SDCCicode.c (geniCodeCast): allow void* casting here since it
is no longer blindly treated as an exact match.
* src/SDCCval.c (valCastLiteral): treat missing type as cast to void

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3436 4a8a32a2-be11-0410-ad9d-d568d2c75423