[gimple-classes, committed 90/92] Automated renaming of gimple subclasses

[David Malcolm]

This patch is huge (704K), so I've trimmed it.

The most pertinent data from the ChangeLog is:

        Patch autogenerated by rename_gimple_subclasses.py from
        https://github.com/davidmalcolm/gcc-refactoring-scripts
        revision 7d754b63ff2bf47226a67b2c0af5d74b54d4709f

The full patch can be seen at:
https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=6cdf27b83b54e05769704e7a42a0851093317206