Backed out 22 changesets (bug 1839396) for causing build bustages on js/Printer.h...

Backed out 22 changesets (bug 1839396) for causing build bustages on js/Printer.h. CLOSED TREE

Backed out changeset 438a7580a804 (bug 1839396)
Backed out changeset 0e43037688b7 (bug 1839396)
Backed out changeset 05ffcc50ddb2 (bug 1839396)
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Backed out changeset 92310695d5cf (bug 1839396)
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Backed out changeset 9cf77f46cf5e (bug 1839396)
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Backed out changeset 00b288e75acf (bug 1839396)
Backed out changeset 21e7991fe154 (bug 1839396)
Backed out changeset 0f468ad1a4d1 (bug 1839396)
Backed out changeset 91937beca944 (bug 1839396)