Bug 1073312 - Test DMD on TBPL (Linux-only). r=glandium.

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extra : rebase_source : c35cc2bfd6720db35ece715dc7ef900ab5864409
Bug 1079660 - DMD: don't call malloc et al. directly in the test. r=glandium.

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extra : rebase_source : 619e57f5624e5fb4fe370608bb4c04cf43a9be00
Bug 1077230 - Enable the DMD test on Mac 10.8. r=glandium.

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extra : rebase_source : c298dd524ab29644f93dc204128b8ab5a2a7383c