The suggestion is to unpack the package and use one file.
So you are actually not using the package.
And it doesn't really matter which Linux OS that was used
to compile the content of the package.
Could as well be a Suse SLE10 libstdc++44-4.4.2_20100116-28.1.i586.rpm
http://download.opensuse.org/reposit...E-10_SDK/i586/
But installing it as a package would conflict with the installed libstdc++.so.6.
( Some of the compilers in the above Suse link can be used on RHEL5.)
.