Bug 1103825 - Move toolkit/mozapps/update/tests rules to misc tier; r=mshal

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extra : histedit_source : be7fde50ece8822cd356176717aa4e91873e37bc
Bug 1103825 - Documents libs requirements for platform.ini; r=mshal

While trying to port platform.ini to the misc tier, it was discovered
that moving it out of libs breaks packaging. Document this.

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extra : rebase_source : 6e2b9134a9cb480bb742cd504748e5ef1351cac6
extra : histedit_source : 8d462316baf91ef0555703cc4afae51f04d75bda
Bug 1103825 - Use misc tier in toolkit/crashreporter/test; r=mshal

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extra : rebase_source : 56e5266d114dc802ac769fbf3f3dc0cd48457a0b
extra : histedit_source : 7fc3e342616f87bd1ecd47e8cc375f0d77af849b
Bug 1103825 - Use misc tier in testing/profiles; r=mshal

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extra : rebase_source : 48c5f6f70d8b96643a92afeb0d280b5298902b80
extra : histedit_source : f77478b10f643c49129676a9ee5eca575e75375e
Bug 1103825 - Use misc tier in xpcom/tests; r=mshal

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extra : rebase_source : 248423ffcf75acd406510dd350ccf4653a3c34b4
extra : histedit_source : 416af91a62eff97ca53596423d4124bf013293b4