[R] functions to calculate t-stats, etc. for lm.fit objects?

[Whit Armstrong]

I'm running a huge number of regressions in a loop, so I tried lm.fit
for a speedup.  However, I would like to be able to calculate the
t-stats for the coefficients.

Does anyone have some functions for calculating the regression summary
stats of an lm.fit object?

Thanks,
Whit