Rebuild configure
This commit rebuilds the configure script for libstdc++.
A previous patch to the libstdc++ configuration system required an explicit rebuild of the configure script after being ported to the trunk. This commit performs that rebuild, ensuring the configuration system is up-to-date.
In Details
This commit rebuilds the configure script in libstdc++. An earlier configury patch, originally made in gcc-15, required an explicit rebuild after porting to the trunk.
For Context
This commit updates the configuration system for the C++ standard library in GCC. The configure script is responsible for detecting system features and setting up the build environment. Rebuilding it ensures that the library is built correctly on different platforms after changes to the underlying configuration logic.