Libffi: Update list of local patches
The list of local patches applied to libffi within GCC has been updated.
The LOCAL_PATCHES file in the libffi subdirectory of GCC is updated to reflect the current set of local patches applied to libffi. Old patches are removed, and the patch applied after the most recent libffi upgrade is added. This ensures that the list of local patches remains accurate and up-to-date.
In Details
The LOCAL_PATCHES file tracks modifications applied to libffi within the GCC build tree. This commit updates the list, removing outdated entries and adding the current patch. A toolchain developer might need this list to understand the differences between the GCC-provided libffi and the upstream libffi when debugging or backporting fixes.
For Context
Libffi is a separate library that provides a way for one programming language to call functions written in another language. GCC includes its own copy of libffi. Sometimes, GCC needs to modify libffi to work correctly within the GCC build environment, or to fix bugs. This commit updates the list of these modifications. This keeps the modifications organized.