Patch for the handling of symbols in clsql

Hey everyone,

Based on a previous thread, I have submitted a pull request to handle 
the output of symbols when saved with clsql. In line with the discussion 
with Russ, the functionality I submitted continues to use intern but 
makes checks on whether there are packages or not in the saved symbol 
and acts accordingly.

One thing I have missed is writing test cases because I was not sure how 
best to proceed (although I have done tests on my end to verify 
everything is in order). The current tests call directly the high level 
functions such as select or update and not the lower functions like 
read-sql-value. I was not sure if I should change some of the 
def-view-classes to add a symbol column, or to add a new def-view-class 
for this specific test or to basically put the tests that I did directly 
on read-sql-value. Any suggestions on what you would like me to do?

Finally I did the pull request to the git repository found at github.com 
even though the change is small (I am just used to pull requests), if 
someone prefers another method I have no problem in resubmitting in a 
different way.

Thank you

Mackram Raydan