Bug 945667 - Disable browser_aboutHome.js on Linux due to intermittent failures.

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extra : rebase_source : 3c51923054c83821feeff9a81e265409ace454d8
Bug 951202 - Change bindings declared with declareLazyFFI to be enumerable. r=Yoric

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extra : rebase_source : 1f5260a3a579f09d30203d010cceaba0cf22cc2e