Solaris2.7 hundreds of new G++ failures, (missing copysignf)

[Benjamin Kosnik]

agh! This is my fault. In doing the host-x-host bits I moved some of
the math functions from *COMPLEX to *MATH macros, and this was one of
them. This probably resulted from this change:

2000-12-12  Benjamin Kosnik  <bkoz@purist.soma.redhat.com>

	    * acinclude.m4 (GLIBCPP_CHECK_CTYPE_SUPPORT): Don't link ctype
	    files here...
	    * configure.in: Rather, do it once for all targets here. Clean up
	    canadian cross and cross compile targets for linux-targeted
	    crosses.
	    * configure: Regenerate.
	    * aclocal.m4: Regnerate.
	    * acconfig.h: Add more defines.
	    * config.h.in: Regenerate.

Here's a way to revert the specific parts that are probably biting
you, attached at the end of this email.

I should check this in, anyway. 

thanks, 
benjamin