Improves the way arena statistics are shown
The mmap'd max/curr and max/curr nr of bytes will be shown e.g. as
   11,440,408/    4,508,968 
instead of
     11440656/ 4509200 

So, using more space, but more readable (in particular when the
nr exceeds the width, and so are not aligned anymore)

git-svn-id: svn:// a5019735-40e9-0310-863c-91ae7b9d1cf9
2 files changed