(Messages emitted via Log.printf are never truncated.)

Rich_text: do not silently truncate buffers, but export function [truncate].
Log: uses [Rich_text.truncate] on messages printed on terminal, and prefix
     truncated messages to indicate the truncation.

Add a record with 2 fields : tnode and tattr

The new parameter is -eva-cache-size.

Also take a Hptmap_sig.cache_type argument instead of ~name and ~temporary.
This is consistent with all other cached functions in hptmap.

The builtins `__builtin_types_compatible_p` and `__builtin_va_arg` need
a type as argument. Frama-C converts them to an expression to be able to
type the builtin call.

This commit change the conversion in `cparser.mly` from a sizeof on the
type to a cast with a marker indicating from which builtin the argument
is coming from. This allows `cabs2cil` to type this expression
differently than a regular cast or sizeof.