Bug 917595 (Part 1) - Respect image-orientation in zoomed image documents. r=smaug

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extra : rebase_source : e5e27e3d8c9f63704e9f83970b6c9ddb2c08dfe1
Bug 917595 (Part 2) - Reftests for zoomed image documents with EXIF orientations. r=smaug

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extra : rebase_source : ffe78a522420a4ae8a51e76c02c8817f9fc03d42
Bug 939385 (part 1, attempt 2) - Rename largestContiguousVMBlock as vsizeMaxContiguous.  r=froydnj.

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extra : rebase_source : e5bdf43ab2a228f3ade93e803988f81d4f3a646e
Bug 939385 (part 2, attempt 2) - Expose vsizeMaxContiguous to telemetry.  r=froydnj.

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extra : rebase_source : c6d4438abd5d17ab70805c59baa68bbc2962b9ba
Bug 939385 (part 3, attempt 2) - Expose vsizeMaxContiguous to about:memory.  r=froydnj.

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extra : rebase_source : 2a7dcf2121c323bb37094b23e329c322f25dfeeb
Bug 939385 (part 4, attempt 2) - Rename some distinguished amount functions.  r=froydnj.

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extra : rebase_source : fc5a8b80752156cf8d13908eb2f961d75a954126
Backed out 4 changesets (bug 672843) for xpcshell bustage

Backed out changeset bbb7760083ae (bug 672843)
Backed out changeset eaf2fd75d7fc (bug 672843)
Backed out changeset eb08cc206b8d (bug 672843)
Backed out changeset 6a0e4afd52ab (bug 672843)