Bug 1261531 - Remove most obvious cases of useless AC_SUBSTs. r=chmanchester - DEVELOPER_OPTIONS, INTEL_CC, INTEL_CXX, MOZ_ENABLE_QTMOBILITY, GTK_CONFIG are or even were never used outside configure. - MOZ_PROFILELOCKING which gradually became a no-op over the years. This also removes the configure flag that sets it. - XULRUNNER_STUB_NAME is xulrunner-only, and xulrunner is gone. This also removes the configure flag that sets it. - The only use of MOZ_CAN_RUN_PROGRAMS was removed in bug 780561. - AR_LIST and AR_DELETE have not been used since bug 584474. - MOZ_COMPONENT_NSPR_LIBS is leftover from bug 1036894. - MOZ_PNG_ARM_NEON_CHECK is not used since bug 980488. - MOZ_WEBRTC_LEAKING_TESTS has been no-oped by bug 825510. - VPX_NEED_OBJ_INT_EXTRACT and NO_INTEGRATED_AS_CFLAGS are not used since bug 1151175. - WCHAR_CFLAGS is not used since bug 904985.

Bug 1261359 - Don't set HOST_{C,CXX,LD}FLAGS from {C,CXX,LD}FLAGS at all. r=nalexander In bug 1260996, we straightened things up for the host flags on cross compile builds, where the situation was that they were effectively empty by default, and that hasn't changed. While working on bug 1260996, it has become clear that there is no much point in setting the host flags from the target flags on non cross compile builds, especially when the target flags come from the environment. That creates a discrepancy with cross compilation builds for no real reason, and there are effectively too few host things to build that it would matter anyways. The flags that do matter are the ones for C++11, C99, and optimisations, and they all are set independently of what is being removed here.

Bug 1261285 - Properly remove the config.log logging handler before running old-configure. r=ted Because closing the handler is not enough (it eventually reopens itself), the dumping of config.log overwrites the file, and confuses the process of reading it to dump it in the first place, showing incomplete logs. The intent from the start was that nothing would be logged in the FileHandler, so on top of closing it, actively remove it.

Bug 1261263 - Remove -fgnu89-inline. r=froydnj It seems the reason why it was added back in bug 719659 is gone.

Bug 1261263 - Switch from -std=gnu++0x to -std=gnu++11. r=froydnj All the GCC and clang versions we support support the latter, so let's use it.

Bug 1261263 - Remove test for libstdc++ headers conflict with clang 3.3. r=froydnj Also remove the hack around it.

Bug 1261263 - Unsupport clang < 3.4. r=froydnj In bug 1254861, we unsupported clang < 3.3, picking 3.3 essentially because that's the smallest version we had on automation. Bug 1254854 changed that, and the smallest version on automation is now 3.5. Now, the motivation to unsupport an old version of clang again is that recent versions don't have the problem with __float128 used in libstdc++ headers (bug 654493). In fact, starting with clang 3.4, the hack we have in place is not necessary. So let's just drop support for clang 3.3 instead of keeping that hack around longer. As mentioned in bug 1254854, Ubuntu 12.04 LTS has clang 3.4 packages.

Bug 1261018 - Make log.queue_debug output debug log when receiving an exception. r=ted

Bug 1261235 - Handle non-ascii in configure logging. r=ted When reading config.log, with old-configure output, we may get non-ascii strings, but that currently fails because we're using plain open() to read it. So use encoded_open() instead (which does the same job for other files in the same script). Because the build system can be encapsulated in mach, python configure can have a pipe as stdout/stderr, and in that case, sys.stdout/stderr have an ascii encoding, failing to print out anything that doesn't fit in ascii, consequently failing to print the things we've read from config.log. So reopen stdout and stderr with the right encoding in the configure output handler.

Backed out changeset 7f0ea82bf6e9 (bug 1256049) because the new assertion hits so often that it generates many oranges. r=backout

Bug 1261416 - Rename firefox-plugin-container back to plugin-container to satisfy Flash's protected mode checks, and ensure that we launch the correct binary r=ted

Bug 1242051 - Add inter-directory test support file dependencies to ini manifests. r=gps Previously, every test and support file would be synced to the objdir when running any test. Now that only those support files and tests requested are synced, we note support files required beyond those in a test's directory in ini manifests. MozReview-Commit-ID: EmlDz9d4lqt

Bug 1242051 - Install test files to the objdir lazily rather than with each invocation of mach. r=gps This moves test installation for test files out of the monolithic install manifest for $objdir/_tests, and determines the test and support files to install based on the object derived from all-tests.json. Additionally, the files resulting from TEST_HARNESS_FILES are installed, as some tests will depend on them. As a result, the time to install tests when invoking the test runner will scale with the number of tests requested to run rather than the entire set of tests in the tree, resulting in significantly less overhead. MozReview-Commit-ID: LeIrUVh1yD4

Bug 1242051 - Extract support files processing from the emitter. r=gps This extracts the logic from the emitter that handles support files in ini manifests to a seperate function in testing.py, so that this logic can be re-used to determine how to install all the files necessary to run a particular test fon the corresponding object in all-tests.json. MozReview-Commit-ID: GSEhEGm09IL

Bug 1259466. Rename layers.offmainthreadcomposition.enabled. r=milan We would rather people not use this pref.

Bug 1259023 - fixing invalid array index assertion when accessing next sibling. r=tbsaunde MozReview-Commit-ID: L1zY8aEmrb

Bug 1259023 - if proxy is a nullpointer, do not set IS_PROXY in AccessibleOrProxy. r=tbsaunde MozReview-Commit-ID: Gx6GAAKZ7bo

Bug 1256049: More assertions. r=janv

Bug 1261158 - Convert test_bug1132427.html to a mochitest-plain. r=tnikkel MozReview-Commit-ID: 4NXUjL4uGEP

Bug 1261158 - Convert test_xultree_animation.xhtml to a mochitest-plain. r=tnikkel MozReview-Commit-ID: BDanrpo7ES