Production of output fails if `output` location is given as file and file not present.

[codekaust]

Consider the following cases for --output:

• output = directory and directory present or not present
• output = file and file not present but the directory containing the file is present / not present
• output = file and neither file is present nor the directory containing the file.

In the third case, ModelPolisher shows exception (java.io.FileNotFoundException) and stops (not producing glossary or output).

Note: This will happen only if you polish a single model, if input is a directory then output must be a directory too, and in that case, no error will come as evident from above cases.

[codekaust]

This issue has existed in ModelPolisher before the feature of the glossary was added to it.

[codekaust]

Similar issue for the following two cases:

• output = <existing directory>/d1/d2/d3: Here, d1,d2,d3 directories are not created already.
• output = <existing directory>/d1/d2/d3/model.xml
• output = <existing directory>/d1/d2: Here, ModelPolisher creates d1 directory but takes d2 as a file.