Swapped out unique_ptr for auto_ptr because of CentOS6 build fail
Swapped out unique_ptr for auto_ptr because of CentOS6 build fail

This problem is exacerbated by flex 2.5.35 which fails to build code
that will compile on C6 using --std=c++0x.

OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap4,OPENDAP/libdap4