Correct the pat parser time overflow.

* Bug: In pat/src/pat_decl_y.y the yylval union type for "valu" was int
    instead of long. In pat_desc_y.y it was long, and pat_decl_l.l was
    using the wrong one. That is Flex was writting an int (4 bits) but
    bison was reading a long (8 bits), so the four upper bits were
    random. Dis show only under 64 bits where int and long have
    differnt sizes...
      There is something strange nevertheless in this tool, the flex
    part for pat_desc seems to be missing, but it compiles (and run).

alliance/src/pat/src/pat_decl_l.l

@@ -186,7 +186,7 @@ letter		[a-zA-Z]
 								}
 <INITIAL,OUT_PAT,DTC_FRM>(0|[1-9][0-9]*)			{
 /*printf ("AbstractLit\n");*/
-		yylval.valu =  atoi (yytext);
+		yylval.valu =  atol (yytext);
 		return (AbstractLit);
 								}
 <INS_PAT>[0-9a-fA-FuU\*\+\-\? \t\n]+				{

alliance/src/pat/src/pat_decl_y.y

@@ -396,7 +396,7 @@ struct paseq  *ptseq ;
 
 %union
   {
-  int           valu;
+  long          valu;
   float         fval;
   char          immd;
   char         *text;

alliance/src/pat/src/pat_desc_y.y

@@ -892,7 +892,7 @@ unsigned char  mode  ;			/* the description style	*/
 
 %union
   {
-  long           valu;
+  long          valu;
   float         fval;
   char          immd;
   char         *text;