SR5, 5.01 Credits down from SR4

To make up for the differences between our estimations and the current "real world" situation of the project we adjusted some values for the workunit generation ("flops factor" and "runtime variation"). For newly generated workunits (not the ones that already had tasks in progress) this means:

- the runtime variation is estimated lower, i.e. the difference (in credit and flops estimation) between workunits of the same frequency band is smaller
- flops estimation and thus credit was raised (maximum 33%)

We'll keep an eye on this; usually we get mostly the longer running ones at the beginning of a run, which makes averaging a bit difficult.

A typo in the code of the workunit generator that I modified for these adjustments caused some trouble to the project yesterday (unresponsive http server etc.). Sorry for that, everything should be back to normal again.

BM