[X86] Add NotMemoryFoldable to a bunch of instructions to suppress them from...

[X86] Add NotMemoryFoldable to a bunch of instructions to suppress them from the autogenerated load folding table.

Most of these are system instructions or other instructions we don't use in CodeGen. No point wasting space for them in the table. Removing them from the autogenerated table makes it easier to review the manual table.

A few are real opcode collisions where the memory and register forms are completely different instructions.

llvm-svn: 334474