Adding point data to test Krovak projection

Just adding data, so that Krovak projection can be tested as well. Transformation is values is based on cs2cs (from original Proj4) and they should work. Command line test:

    echo 12.806988 49.452262|cs2cs +init=epsg:4326 +to +proj=krovak +lat_0=49.5 +lon_0=24.83333333333333 +alpha=30.28813972222222 +k=0.9999 +x_0=0 +y_0=0 +ellps=bessel +pm=greenwich +units=m +no_defs +towgs84=570.8,85.7,462.8,4.998,1.587,5.261,3.56

The definition corresponds with czech projection aka EPSG:5514