Fix compatibility issue with Bison 3.

Closes #570

(cherry picked from commit 96e973a0)

preprocessor/DynareBison.yy

@@ -42,19 +42,19 @@ class ParsingDriver;
   do {                                                          \
     if (N)                                                      \
       {                                                         \
-        (Current).begin = (Rhs)[1].begin;               \
-        (Current).end   = (Rhs)[N].end;                 \
+        (Current).begin = YYRHSLOC(Rhs, 1).begin;               \
+        (Current).end   = YYRHSLOC(Rhs, N).end;                 \
       }                                                         \
     else                                                        \
       {                                                         \
-        (Current).begin = (Current).end = (Rhs)[0].end;	\
+        (Current).begin = (Current).end = YYRHSLOC(Rhs, 0).end;	\
       }                                                         \
     driver.location = (Current);                                \
   } while(false)
 
 %}
 
-%name-prefix="Dynare"
+%name-prefix "Dynare"
 
 %parse-param { ParsingDriver &driver }
 %lex-param { ParsingDriver &driver }

preprocessor/macro/MacroBison.yy

@@ -35,7 +35,7 @@ using namespace std;
 class MacroDriver;
 %}
 
-%name-prefix="Macro"
+%name-prefix "Macro"
 
 %parse-param { MacroDriver &driver }
 %parse-param { ostream &out }