add --queryfile to rasql and support --out formatted

[Dimitar Misev]

An option allowing to read a query from a file should be supported in rasql. This is helpful when shell escaping becomes cumbersome or even problematic.

--queryfile <file>
    file containing the query string to be sent to the 
    rasdaman server for execution

Furthermore, the --out formatted option currently does not print anything and should be fixed to print the array values properly formatted to stdout in format:

1. single-band arrays:

   cell1,cell2,cell3,....
   ...
   

2. multi-band arrays:

   {band1cell1,band2cell1,...},{band1cell2,band2cell2,...},...
   ...
   

In both cases a new line \n is printed whenever the extent of the last axis is iterated, e.g. for domain [0:100,1:10] an \n will be printed after every 10 values.