Transceiver52M: Verify global config sanity before using
Transceiver52M: Verify global config sanity before using

The configuration table is instantiated as a global variable with
no means to check constructor status. This means various types
of database failure conditions (e.g. file existence, permissions,
etc.) are not reported. This patch performs a small number of
checks to make sure that the configuration is sane.

Signed-off-by: Thomas Tsou <tom@tsou.cc>

git-svn-id: 504cad4147f1e500be0a169b9f46375eaf875953@6726 19bc5d8c-e614-43d4-8b26-e1612bc8e597

endaga/openbts,hongyunnchen/openbts,dhenyjarasandy/openbts,xyzr0482/openbts,endaga/openbts,maxifree/openbts,brunoflce/pessoalopenBTS,brunoflce/pessoalopenBTS,brunoflce/pessoalopenBTS,RangeNetworks/openbts,maxifree/openbts,hongyunnchen/openbts,Djimmer/obts,maxifree/openbts,xyzr0482/openbts,maxifree/openbts,Djimmer/obts,hongyunnchen/openbts,brunoflce/pessoalopenBTS,xyzr0482/openbts,endaga/openbts,RangeNetworks/openbts,dhenyjarasandy/openbts,WindyCitySDR/openbts,RangeNetworks/openbts,RangeNetworks/openbts,dhenyjarasandy/openbts,dhenyjarasandy/openbts,RangeNetworks/openbts,maxifree/openbts,RangeNetworks/openbts,xyzr0482/openbts,WindyCitySDR/openbts,endaga/openbts,dhenyjarasandy/openbts,WindyCitySDR/openbts,Djimmer/obts,hongyunnchen/openbts,Djimmer/obts,Djimmer/obts,hongyunnchen/openbts,xyzr0482/openbts,Djimmer/obts,brunoflce/pessoalopenBTS,WindyCitySDR/openbts,endaga/openbts,WindyCitySDR/openbts