Don't attempt to instrument Ramda.js "when"

[pasieronen]

The Ramda library (http://ramdajs.com/) contains a file named "when.js", which is completely unrelated to the When.js library (and is not even about promises).

This causes a warning Failed to instrument module when... when New Relic attempts to instrument it (tested with newrelic 1.38.2, ramda 0.23.0, Node 6.9.4), with stack trace

TypeError: Cannot read property 'prototype' of undefined
    at initialize (<DIR>/node_modules/newrelic/lib/instrumentation/promise.js:87:24)
    at initialize (<DIR>/node_modules/newrelic/lib/instrumentation/when.js:45:3)
    at instrument (<DIR>/node_modules/newrelic/lib/shimmer.js:51:22)
    at _postLoad (<DIR>/node_modules/newrelic/lib/shimmer.js:89:5)
    at Function.cls_wrapMethod [as _load] (<DIR>/node_modules/newrelic/lib/shimmer.js:263:16)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (<DIR>/node_modules/ramda/index.js:232:9)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Function.cls_wrapMethod [as _load] (<DIR>/node_modules/newrelic/lib/shimmer.js:263:38)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)

The pull requests just tests whether the loaded "when" looks reasonable.

[NatalieWolfe]

Thanks for letting us know about this! I'll pull in your changes to go out with the next release.

[NatalieWolfe]

This went out in 1.39.0, please let me know if that update works for you. Thanks!