stdlib.h: Remove *rand48_r methods.

These were declared in this header on BeOS, so we need to keep
them around for ABI compatibility, but they are nonstandard
and no other C library besides glibc appears to provide them
at all (not even musl, and none of the BSDs.)

headers/posix/stdlib.h

@@ -31,14 +31,6 @@ struct random_data  {
     int *end_ptr;
 };
 
-struct drand48_data  {
-    unsigned short int x[3];
-    unsigned short int a[3];
-    unsigned short int c;
-    unsigned short int old_x[3];
-    int init;
-};
-
 
 #ifdef  __cplusplus
 extern "C" {
@@ -126,21 +118,6 @@ extern void		srand48(long int seed);
 extern unsigned short *seed48(unsigned short int seed16v[3]);
 extern void		lcong48(unsigned short int param[7]);
 
-extern int		drand48_r(struct drand48_data *data, double *result);
-extern int		erand48_r(unsigned short int xsubi[3],
-					struct drand48_data *data, double *result);
-extern int		lrand48_r(struct drand48_data *data, long int *result);
-extern int		nrand48_r(unsigned short int xsubi[3],
-					struct drand48_data *data, long int *result);
-extern int		mrand48_r(struct drand48_data *data, long int *result);
-extern int		jrand48_r(unsigned short int xsubi[3],
-					struct drand48_data *data, long int *result);
-extern int		srand48_r(long int seed, struct drand48_data *data);
-extern int		seed48_r(unsigned short int seed16v[3],
-					struct drand48_data *data);
-extern int		lcong48_r(unsigned short int param[7],
-					struct drand48_data *data);
-
 /* search and sort functions */
 typedef int (*_compare_function)(const void *, const void *);
 

src/system/libroot/posix/glibc/stdlib/Jamfile

@@ -24,27 +24,29 @@ for architectureObject in [ MultiArchSubDirSetup ] {
 			drand48_r.c
 			drand48-iter.c
 			erand48.c
-			erand48_r.c
 			fpioconst.c
 			jrand48.c
-			jrand48_r.c
 			inlines.c
 			lcong48.c
-			lcong48_r.c
 			lrand48.c
-			lrand48_r.c
 			mrand48.c
-			mrand48_r.c
 			nrand48.c
-			nrand48_r.c
 			random_r.c
 			seed48.c
-			seed48_r.c
 			srand48.c
-			srand48_r.c
 			strtod.c
 			strtold.c
 			strtof.c
+
+			# These are nonstandard but were declared in BeOS's headers.
+			erand48_r.c
+			jrand48_r.c
+			lcong48_r.c
+			lrand48_r.c
+			mrand48_r.c
+			nrand48_r.c
+			seed48_r.c
+			srand48_r.c
 			;
 	}
 }