emms-info-native error catch

[Yoni Rabkin]

I made a small change to the `emms-info-native' function to intercept
errors. An error which is not intercepted at this level will cause any
of the `emms-add-...' functions to stop dead in their tracks. With this
error catching the user will have a list of errors in their "*Messages*"
buffer, the `emms-add-...' function will complete its work, and the
tracks that failed will simply have their filename inserted instead.

-- 
   "Cut your own wood and it will warm you twice"