libfplll fails to build in parallel on Cygwin

Imported from <a href="http://trac.sagemath.org/sage_trac/ticket/13804">trac #13804</a>.

Spkg diff, for review only.

Reported by: jpflori

Component: cygwin

CC: kcrisman,, dimpase

Report Upstream: None of the above - read trac for reasoning.

Authors: Jean-Pierre Flori

Dependencies: 

Work issues: 

Reviewers: Karl-Dieter Crisman

Merged in: sage-5.6.rc0

Attachments: <ol><li><a href="http://trac.sagemath.org/sage_trac/attachment/ticket/13804/libfplll-3.0.12.p3.diff">libfplll-3.0.12.p3.diff: Spkg diff, for review only.</a> by jpflori at 20121220T11:09:22</li></ol>