SFP for i386-elf on i386ex works

[erik.ivanenko at utoronto.ca (Erik Ivanenko)]

The Paranoia test passed using Software Floating point on the i386-elf
version.  Changes were required to i386.h and real.h re: setting the
sizeof long double to 64 bits.  Changes were also required to the
make-exe are required to enable loading of several extra sections.
(.initial and .reset)

This configuration works:

Host: Solaris 2.6. native compiler gcc-2.8.1
target: i386ex
cross: i386-elf     egcs-1.1.2 w/ rtems patches
bintutils: 2.9.1.0.10, newlib-1.8.0

Caveat:  It does not run out "out of the box".  Several modifications to
the Makefiles, and either the configure.in or bit scripts are required
to make it work.