# logs the callstack of the sql query by aliasing the methods in and out to not affect the performance
# of regular statements
# 
# options 
#   :include => only log if the sql matches this regexp or string
#   :log_level => log level to log at. default to :debug
#   :sql_type => defaults to :execute (SELECT) also :insert, :delete and :update are available
# 
# class GiraffeRoar
#   include LogSqlCaller
#   
#   def some_method
#     log_sql_caller(:sql_type => :execute, :include => 'SELECT count(*)') do
#       ... SOME AR stuff or whatever ..
#     end
#   end
# end
# 
# 
# Other examples
# log inserts
# log_sql_caller(:sql_type => insert, :include => /^INSERT/) {...}
# 
# log all queries at warning level
# log_sql_caller(:log_level => :warn) {...}
#