Windows build script: replace exit with goto :eof
because windows shell is weird enough as it is.
Rinex3EphemerisStore: implement SBAS ephemeris
Quick and dirty implementation, puts all SBAS data into GLONASS store,
because they are very similar anyway. Expect timesystem-related problems.
Merge branch 'feature/sbas-ephemeris-store'
Merge branch 'feature/windows-build-script'