general use conversion fucntions: DoubleToFloat value, and DoubleToFloatN array;

special case function - should be placed elsewhere.

correction of a hit position (const double*) by a residual TVectorD
return value must be const float* - hopefully can be resolved by other means soon
delete obsolete method prepareMilleOut(2 par), and make _alignmentMode =0 (noAlignment) default
macro should not end with a ";"
remove all referneces to Alignment in EUTelProcessorTrackingGBLTrajectory processor, it's done in EUTelProcessorAlignmentGBLMille now
add printout BEGIN and END messages for cartesian2LCIO

actually this function is already introduced in EUTelTrackFitter as low level as possible
remove alignment related code.