changed the size_type to size_t

An arithmetic error cause the vector::push_back method to throw, have to
be very carefull with pseudo_ptr definition
clean up log message
add mime type for kml, support for sparql output in csv
persistent strings are implemented as cstring using vector
test using shared library
fix major bug with pool_array when payload smaller then cell
add support for sparql result csv formatted
add ip address to Set, modification to svg plot