update README_U with info from metalint itself
-rw-r--r-- 32 .gitignore
-rw-r--r-- 668 .package
-rw-r--r-- 390 Makefile.PL
-rw-r--r-- 6965 README
-rw-r--r-- 5207 README_U
drwxr-xr-x - U.check
drwxr-xr-x - U
drwxr-xr-x - bin
-rwxr-xr-x 420 make-dist.pl
-rw-r--r-- 116686 metaconfig.html