* src/debug/dbgentry.c
+ added new PRG functions:
__dbgIsBreak( <pDbg>, <cModule>, <nLine> ) -> <nPos>
__dbgGetBreakPoints( <pDbg> ) -> <aBreakPoints>
* src/debug/debugger.prg
- removed old and long time unused PRG function __dbgAltDEntry()
* src/rtl/hbproces.c
* changed returned status when execvp() fails, -1 should give
maximal exit code on given platform (i.e. 255)