Deprecate references to portsnap - part 1: Handbook

[pauamma_gundo.com]

Summary

While there:

• replace a stray public address (assigned to someone as far as I can tell) in the Handbook jail example with a RFC1918 private address
• move a plural mark outside <filename>...</filename>
• update poudriere examples to refer to 11.4 instead of 10.4

Test Plan

• Examples tested by running them in a 11.4 VM
• Doc itself tested using lynx

[bcr]

The change looks good to me. Just a minor thing about portsnap options...

en_US.ISO8859-1/books/handbook/jails/chapter.xml

725 ↗

(On Diff #74915)

Can you change the "fetch extract" part into "auto" (which will extract if there is no prior ports tree and update an existing one)?

[pauamma_gundo.com]

• s/fetch update/auto/ at bcr's request.

[bcr]

Approved and will be committed in a short while... Thank you!

head/en_US.ISO8859-1/books/handbook/ports/chapter.xml

  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+#include <float.h>
 #include <math.h>
 
 #include "fpmath.h"
 
 double
 fmin(double x, double y)
 {
         union IEEEd2bits u[2];
 
         u[0].d = x;
         u[1].d = y;
 
         /* Check for NaNs to avoid raising spurious exceptions. */
         if (u[0].bits.exp == 2047 && (u[0].bits.manh | u[0].bits.manl) != 0)
                 return (y);
         if (u[1].bits.exp == 2047 && (u[1].bits.manh | u[1].bits.manl) != 0)
                 return (x);
 
         /* Handle comparisons of signed zeroes. */
         if (u[0].bits.sign != u[1].bits.sign)
                 return (u[u[1].bits.sign].d);
 
         return (x < y ? x : y);
 }
+
+#if (LDBL_MANT_DIG == 53)
+__weak_reference(fmin, fminl);
+#endif