Fix build on Solaris 2.8 by using atof+index in...
Fix build on Solaris 2.8 by using atof+index in...

Fix build on Solaris 2.8 by using atof+index instead of strtof.
Thanks to Andreas Kupries for providing a patch, simplified by me.

This commit was SVN r3586.

ggouaillardet/hwloc,ggouaillardet/hwloc,ggouaillardet/hwloc,shekkbuilder/hwloc,shekkbuilder/hwloc,shekkbuilder/hwloc,shekkbuilder/hwloc,ggouaillardet/hwloc