64-bit iconv issue resolved

[Dr. David Kirkby]

I opened a bug report a few weeks ago

http://trac.sagemath.org/sage_trac/ticket/9718

that iconv was failing to build 64-bit on 'fulvia' (Solaris x86) and on
'disk.math' which runs an old version of OpenSolaris.

Ralf Wildenhues, who is a libtool developer found a solution. So that ticket
will hopefully be closed soon and an iconv which builds on 64-bit on fulvia will
be available.

I have another ticket open for iconv, which has become a bit of a nightmare.

My aim was just to force iconv to install on HP-UX as it does on Solaris and
Cygwin, but Leif the reviewer wanted other changes made. Many were a matter of
style or preference, but one was a useful one, to permit iconv to build in
parallel, though the time saved is very little, as iconv builds quite quickly
anyway.

To be fair to Leif, the iconv package is better for it, but I did feel most were
unnecessary.

Anyway, hopefully the iconv package will soon be building 64-bit on fulvia.

It's difficult to estimate the time it will take to get Sage working fully
64-bit, but I'm confident it will be done before the end of the year, and I
suspect before the end of October. But it is very hard to know really. Some
problems can be difficult to solve.

Dave