0023934: Compiler warnings in MS VC++ 10

Elimination of compiler warnings
- ExprIntrp: generated file ExprIntrp.tab.c and related WOK scripts removed from the sources
- ExprIntrp, StepFile: added missing declarations and casts; warnings caused by Flex and Bison code suppressed for MSVC compuler by #pragma
- OSD: dummy #includes added to files containing no code for Windows, to avoid warning on empty file
- PLib: piece of code contained in PLib_ChangeDim.gxx included explicitly in cxx and cleaned
- Other places: some casts added to avoid warnings

src/StepFile/recfile.pc

@@ -93,9 +93,11 @@ void rec_settext(char* s)
 char* rec_newtext(char* r)
 /*  routine utilitaire creant une chaine dynamique a partir d'un char[]  */
 {
-  char* savrestext; char* s0;
+  char* savrestext;
+  char* s0;
   savrestext = restext;
-  rec_restext(r,strlen(r)); s0 = restext;
+  rec_restext(r,(int)strlen(r));
+  s0 = restext;
   restext = savrestext;
   return (s0);
 }
@@ -396,7 +398,9 @@ void rec_print(struct rec* unrec)
  if (modeprint < 2) return ;
  curarg = unrec->first ;
  while (curarg != NULL) {
-   numa ++;  argl = strlen(curarg->val) + 18;  numl += argl;
+   numa ++;
+   argl = (int)strlen(curarg->val) + 18;
+   numl += argl;
    if (numl > 132) {  printf("\n");  numl = argl;  }
    printf ("  - Arg.%d[%c%c] : %s",
 	   numa,argtype1[curarg->type],argtype2[curarg->type],curarg->val);

src/StepFile/step.lex

@@ -45,6 +45,11 @@ void rec_typarg(int argtype);
   void resultat ()           /* Resultat alloue dynamiquement, "jete" une fois lu */
       { if (modcom == 0) rec_restext(yytext,yyleng); }
 
+// disable MSVC warnings in flex code
+#ifdef _MSC_VER
+#pragma warning(disable:4131 4244 4273 4267 4127)
+#endif
+
 %}
 %%
 "	"	{;}

src/StepFile/step.yacc

@@ -54,6 +54,12 @@
 #define alloca malloc
 #endif
 
+
+// disable MSVC warnings in flex code
+#ifdef _MSC_VER
+#pragma warning(disable:4244 4131)
+#endif
+
 %}
 %%
 /*  N.B. : les commentaires sont filtres par LEX  */