Adapt introductory text in Res_elec_Ctl.F. No changes to simulation.

Fix glitch in LiIon batter BMS for "hiVoltage" case. Similar fix probably necessary for "loVoltage" case.

Next step should be to extend power.h with all the commons used in pfs.

Compile and run on OS X O.K., fixed LiIon BMS gives results much closer to expected.