libs4cdo-0.0.6 released

New features:

Use NetCDF 4.1.1 instead of Netcdf 4.0.1
Improved building speed: By using the make variable MPROCS, the -j options is set during the build process, e.g.
```
make libs4cdo MPROCS=8
```
will make use of 8 cores. The default value is 2.
NetCDF and HDF5 are always compiled with PIC support. This improves linking shared libraries against their static versions on some platforms.

CDO