Re-enable declaration of rnbeta until Rcpp is fixed.

git-svn-id: https://svn.r-project.org/R/trunk@89137 00db46b3-68df-0310-9c12-caf00c1e9a41

Author: luke

src/include/Rmath.h0.in

@@ -540,9 +540,14 @@ double	rlogis(double, double);
 double	dnbeta(double, double, double, double, int);
 double	pnbeta(double, double, double, double, int, int);
 double	qnbeta(double, double, double, double, int, int);
-//double	rnbeta(double, double, double);
+#ifdef COMPILING_RCPP
+# if RCPP_VERSION <= Rcpp_Version(1,1,0)
+// Rcpp 1.1.0 relies on this declaration existing
+double	rnbeta(double, double, double);
+# endif
+#endif
 
-	/* Non-central F Distribution */
+    /* Non-central F Distribution */
 
 double  dnf(double, double, double, double, int);
 double	pnf(double, double, double, double, int, int);