Changes:

 * Apply change even if the supplied value is odd, just warn that it is rounded.

   Previously the value was not set at all, which may have lead to a situation when

   a user thinks the BTS operating at low power, while it is running full power.

 * Apply change even if the supplied value is higher than the 24dB maximum

   suggested by the standard, just warn about this.

   UmSITE and probably other SDR based BTS support much wider power

   regulation range.

 * Apply change to the BTS over OML immediately.