Move the hash table used for long literal support in streaming mode from
FDR to Rose, and introduce new instructions CHECK_LONG_LIT and
CHECK_LONG_LIT_NOCASE for doing literal confirm for long literals.
This simplifies FDR confirm, and guarantees that HWLM matchers will only
be used for literals < 256 bytes long.
This commit replaces the build-time representation of the Rose
interpreter programs, from a class containing a discriminated union of
the bytecode structures to a class hierarchy of build-time prototypes.
This makes it easier to reason about and manipulate Rose programs during
compilation.
