gsl 0.8 compile error

[Brian Gough]

Toby White writes:
 > The patches below fix it - however, make check throws up a couple
 > of errors - I've addressed these in a separate post. This has 
 > only been tested on OpenBSD 2.9, but should work for any version
 > after 2.0.
 > 

Thanks. I have added that.  

Regarding the errors in complex I am suspicious of a few of them. In
particular,

FAIL: gsl_complex_arcsin imag part at (0.5,1.19209e-07) (1.37651030870007706e-07 observed vs 1.37651030824094312e-07 expected)

has a relative error of 3.33549e-10 but should be accurate to nearly
full precision (according to the paper of Hull et al).  If I run the
tests with GSL_IEEE_MODE=double-precision on x86 they pass ok, so they
should work on any machine with correct IEEE arithmetic.  Perhaps
there is an error in hypot() or log1p() on Openbsd??? (Does it use the
system functions or the ones in GSL?)

Brian