* debugger/mcs51/break.c,

* debugger/mcs51/break.c,
* debugger/mcs51/cmd.c (throughout): removed unused variables and labels,
  use %p to print pointers, made address variables unsigned
* debugger/mcs51/cmd.c (infoSymbols): added missing parameter to printf
* debugger/mcs51/symtab.c (parseSymbol): must return something
* src/mcs51/gen.c (aopForSym): small optimization,
   moved declarations mcs51_ptrRegReq and mcs51_nRegs to ralloc.h,
  (freeAsmop): added missing break,
  (aopPut): removed parameter bvolatile, determine it inside the function,
  (saveRegisters, unsaveRegisters): small optimization,
  (genIpush): removed pointless check,
  (throughout): replaced Safe_calloc, strcpy with Safe_strdup,
  replaced sprintf with SNPRINTF,
  replaced strcpy with strncpyz,
  updated aopPut calls,
  replaced D(emitcode("; genXXX", "")) with D(emitcode(";", "genXXX"))
* src/mcs51/ralloc.h:  added declarations mcs51_ptrRegReq and mcs51_nRegs

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@4190 4a8a32a2-be11-0410-ad9d-d568d2c75423