correcting type in forward declaration of sBrevity
Bug fix: make sure enough cmd line arguments are provided after --lambda or --kappa

This prevents a segmentation fault if no enough arguments are given
for example:

 ./softpoint sugra --tanBeta=10 --lambda 1

or

 ./softpoint sugra --tanBeta=10 --kappa 1
Merge pull request #14 from Expander/softsusy-fixes

One Softsusy bug fix and one compiler warning fix