0025418: Debug output to be limited to OCC development environment

Macros ending on "DEB" are replaced by OCCT_DEBUG across OCCT code; new macros described in documentation.
Macros starting with DEB are changed to start with "OCCT_DEBUG_".
Some code cleaned.

src/OSD/OSD.cxx

@@ -128,7 +128,7 @@ Standard_Boolean OSD::IsDivisible(const Standard_Real theDividend,const Standard
   // you may divide by infinity
   //
   if (! finite(theDivisor)) return Standard_True;
-#ifdef DEB
+#ifdef OCCT_DEBUG
 //   Standard_Integer aExp1,  aExp2;
 //   Standard_Real aMant1 = frexp(theDividend, &aExp1);
 //   Standard_Real aMant2 = frexp(theDivisor, &aExp2);

src/OSD/OSD_File.cxx

@@ -1032,7 +1032,7 @@ void OSD_File :: Read (
                  ) {
 
  if ( OSD_File::KindOfFile ( ) == OSD_DIRECTORY ) { 
-#ifdef OSD_DEB
+#ifdef OCCT_DEBUG
    cout << " OSD_File::Read : it is a directory " << endl;
 #endif
    return ;

src/OSD/OSD_FileIterator.cxx

@@ -186,7 +186,7 @@ char full_name[255];
 
      sprintf(full_name,"%s/%s",myPlace.ToCString(),
 	     ((struct dirent *)myEntry)->d_name);		 // LD debug
-#ifdef OSD_DEB
+#ifdef OCCT_DEBUG
      cout << "Place : " << myPlace << endl;
      cout << "FName : " << full_name << endl;
 #endif

src/OSD/OSD_FileNode.cxx

@@ -215,7 +215,7 @@ TCollection_AsciiString second_name;
  myPath.SystemName ( aBuffer );
  status =  copy_file(aBuffer.ToCString(), second_name.ToCString());
  if (status != 0) myError.SetValue (-1, Iam, "Copy failed") ;// (LD)
-#ifdef DEBUG
+#ifdef OCCT_DEBUG
  printf("Status %d : errno # %d\n",status,errno);
 #endif
 }

src/OSD/OSD_Path.cxx

@@ -360,7 +360,7 @@ OSD_Path::OSD_Path(const TCollection_AsciiString& aDependentName,
      MacExtract(aDependentName,myDisk,myTrek,myName,myExtension);
      break;
   default:
-#ifdef OSD_DEB
+#ifdef OCCT_DEBUG
        cout << " WARNING WARNING : OSD Path for an Unknown SYSTEM : " << (Standard_Integer)todo << endl;
 #endif 
      break ;

src/OSD/OSD_signal.cxx

@@ -187,7 +187,7 @@ static void Handler (const int theSignal)
       if (aCurInfoHandle) {
         // cout << "OSD::Handler: calling previous signal handler with info " << aCurInfoHandle <<  endl ;
         (*aCurInfoHandle) (theSignal, aSigInfo, theContext);
-#ifdef OSD_DEB
+#ifdef OCCT_DEBUG
         cerr << " previous signal handler return" <<  endl ;
 #endif
         return;
@@ -202,7 +202,7 @@ static void Handler (const int theSignal)
       if(aCurHandler) {
         // cout << "OSD::Handler: calling previous signal handler" <<  endl ;
         (*aCurHandler) (theSignal);
-#ifdef OSD_DEB
+#ifdef OCCT_DEBUG
         cerr << " previous signal handler return" <<  endl ;
 #endif
         return;
@@ -268,10 +268,7 @@ static void Handler (const int theSignal)
     sigprocmask(SIG_UNBLOCK, &set, NULL) ;
 #ifdef DECOSF1
     // Pour DEC/OSF1 SIGFPE = Division par zero.
-    // should be clarified why in debug mode only?
-#ifdef DEBUG
     Standard_DivideByZero::NewInstance('')->Jump;
-#endif
     break;
 #endif
 #if (!defined (__sun)) && (!defined(SOLARIS))
@@ -318,7 +315,7 @@ static void Handler (const int theSignal)
     Standard_DivideByZero::NewInstance("SIGTRAP IntegerDivideByZero")->Jump(); break;
 #endif
   default:
-#ifdef OSD_DEB
+#ifdef OCCT_DEBUG
     cout << "Unexpected signal " << theSignal << endl ;
 #endif
     break;
@@ -359,7 +356,7 @@ static void SegvHandler(const int theSignal,
        OSD_SIGSEGV::NewInstance(Msg)->Jump();
      }
   }
-#ifdef OSD_DEB
+#ifdef OCCT_DEBUG
   else {
     cout << "Wrong undefined address." << endl ;
   }
@@ -390,7 +387,7 @@ static void SegvHandler(const int theSignal,
 //    scp->sc_pcoq_tail = scp->sc_pcoq_tail + 0x4 ; l'intruction suivant le segv.
     }
   }
-#ifdef OSD_DEB
+#ifdef OCCT_DEBUG
   else {
     cout << "Wrong undefined address." << endl ;
   }
@@ -423,7 +420,7 @@ void OSD::SetSignal(const Standard_Boolean aFloatingSignal)
     //stat = ieee_handler("set", "inexact", PHandler) || stat;
 
     if (stat) {
-#ifdef OSD_DEB
+#ifdef OCCT_DEBUG
       cerr << "ieee_handler does not work !!! KO " << endl;
 #endif
     }
@@ -442,7 +439,7 @@ void OSD::SetSignal(const Standard_Boolean aFloatingSignal)
  if ( first_time & 2 ) {
    char *TRAP_FPE = getenv("TRAP_FPE") ;
    if ( TRAP_FPE == NULL ) {
-#ifdef OSD_DEB
+#ifdef OCCT_DEBUG
      cout << "On SGI you must set TRAP_FPE environment variable : " << endl ;
      cout << "set env(TRAP_FPE) \"UNDERFL=FLUSH_ZERO;OVERFL=DEFAULT;DIVZERO=DEFAULT;INT_OVERFL=DEFAULT\" or" << endl ;
      cout << "setenv TRAP_FPE \"UNDERFL=FLUSH_ZERO;OVERFL=DEFAULT;DIVZERO=DEFAULT;INT_OVERFL=DEFAULT\"" << endl ;
@@ -472,7 +469,7 @@ void OSD::SetSignal(const Standard_Boolean aFloatingSignal)
   //==== Always detected the signal "SIGFPE" =================================
   stat = sigaction(SIGFPE,&act,&oact);   // ...... floating point exception 
   if (stat) {
-#ifdef OSD_DEB
+#ifdef OCCT_DEBUG
      cerr << "sigaction does not work !!! KO " << endl;
 #endif
      perror("sigaction ");