R-alpha: lbeta, ctrl-C and crashes

[Jim Lindsey]

1. lbeta and beta do not work properly: lbeta returns its first
argument and beta gives the lbeta result. 
In names.c lines 245-6, the codes for these should be 2 and 3 instead
of 1 and 2

2. crtl-C does not work (except the first time) on Red Hat elf Linux
(which has many many other problems as well) nor on the previous
version of Linux for Amiga. It worked on Slackware aout Linux and now
works on the most recent version of Linux for the Amiga. It also works
correctly on a Sun.

3. I suspect that my core dump problem may arise from repeated calls
to complex R functions with big data vectors from C code as occurs
with nlm interating to find the MLE.  Doing a gc() between uses of nlm
seems to reduce the problem.

Jim
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