Also fixed flatc not outputting these identifiers for files
compiled on the command-line.
Bug: 16983987
Change-Id: I8b714cfea3a8e144fa52133f62b2f7eda6eb044a
Tested: on Linux
Allows you to add, and test for the presence of a magic 4-char
string in a FlatBuffer.
Tested: on OS X.
Change-Id: I090692a9e4fb53bed3543279a28563e67132cba0
New attribute:
- `id: n` (on a table field): manually set the field identifier to `n`.
If you use this attribute, you must use it on ALL fields of this table,
and the numbers must be a contiguous range from 0 onwards.
Additionally, since a union type effectively adds two fields, its
id must be that of the second field (the first field is the type
field and not explicitly declared in the schema).
For example, if the last field before the union field had id 6,
the union field should have id 8, and the unions type field will
implicitly be 7.
IDs allow the fields to be placed in any order in the schema.
When a new field is added to the schema is must use the next available ID.
Change-Id: I8690f105f3a2d31fdcb75a4fab4130692b12c62f
Tested: on Windows
