Need access to JSITER constants

[frewsxcv]

I'm working on https://github.com/servo/servo/pull/7254 and am utilizing this function. I need access to the constants below for the flags parameter:

http://mxr.mozilla.org/mozilla-central/source/js/src/jsfriendapi.h#945

#define JSITER_ENUMERATE  0x1   /* for-in compatible hidden default iterator */
#define JSITER_FOREACH    0x2   /* get obj[key] for each property */
#define JSITER_KEYVALUE   0x4   /* obsolete destructuring for-in wants [key, value] */
#define JSITER_OWNONLY    0x8   /* iterate over obj's own properties only */
#define JSITER_HIDDEN     0x10  /* also enumerate non-enumerable properties */
#define JSITER_SYMBOLS    0x20  /* also include symbol property keys */
#define JSITER_SYMBOLSONLY 0x40 /* exclude string property keys */

I'm not too familiar with the inner workings of this repo. How would one go about adding these?

[michaelwu]

Just define them in lib.rs like the other constants. We'll probably get support for constants in bindgen at a later point, but they're manually defined for now.