coupling load and store in script no longer works

                 Key: PIG-789
             Project: Pig
          Issue Type: Bug
          Components: impl
    Affects Versions: 0.3.0
            Reporter: Alan Gates

Many user's pig script do something like this:

a = load '/user/pig/tests/data/singlefile/studenttab10k' as (name, age, gpa);
c = filter a by age > 500;
e = group c by (name, age);
f = foreach e generate group, COUNT($1);
store f into 'bla';
f1 = load 'bla';
g = order f1 by $1;
dump g;

With the inclusion of the multi-query phase2 patch this appears to no longer 
work.  You get an error:

2009-04-28 18:24:50,776 [main] ERROR - ERROR 
2100: hdfs:// does not exist.

We shouldn't be checking for bla's existence here because it will be created 
eventually by the script.

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