6607 add default MAP_FILE symbol to sys/mman.h
Reviewed by: Andy Stormont <astormont@racktopsystems.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>

*** 136,146 ****
--- 136,153 ----
  
         MAP_32BIT
                          Map to the lower 32 bits of address space.
  
  
+        MAP_FILE
+                         Map a regular file. This is the default behavior;
+                         specifying this flag is not required. It is provided
+                         for compatibility with other systems and should not be
+                         included in new code.
  
+ 
+ 
         The MAP_SHARED and MAP_PRIVATE options describe the disposition of
         write references to the underlying object. If MAP_SHARED is specified,
         write references will change the memory object. If MAP_PRIVATE is
         specified, the initial write reference will create a private copy of
         the memory object page and redirect the mapping to the copy. The
*** 609,614 ****
         msync(3C), plock(3C), sysconf(3C), attributes(5), lf64(5),
         standards(5), null(7D), zero(7D)
  
  
  
!                                  April 9, 2016                         MMAP(2)
--- 616,621 ----
         msync(3C), plock(3C), sysconf(3C), attributes(5), lf64(5),
         standards(5), null(7D), zero(7D)
  
  
  
!                                 August 29, 2016                        MMAP(2)