Update kdump(1) to print more human readable information.

Update kdump(1) to print more human readable information.

This shows the difference between the old output and the new one:

-73540 telnet   CALL  mmap(0,0xb80,0x3,0x1000,0xffffffff,0,0,0)
+73540 telnet   CALL  mmap(0,0xb80,PROT_READ|PROT_WRITE,MAP_ANON,0xffffffff,0,0,0)
-73540 telnet   CALL  sigprocmask(0x1,0x2806f97c,0xbfbff2c8)
+73540 telnet   CALL  sigprocmask(SIG_BLOCK,0x2806f97c,0xbfbff2c8)
-73540 telnet   CALL  socket(0x1c,0x1,0x6)
+73540 telnet   CALL  socket(PF_INET6,SOCK_STREAM,0x6)

Obtained-from: FreeBSD