For example root-relative links will now be rejected.

Also remove some exceptions which have since been fixed and fix a typo in
the broken redirect handling.

This commit enhances the rustbuild support for testing Android to the same level
of parity as the makefiles. This involved:

* A new step to copy the standard library and other shared objects to the
  emulator. This is injected as a dependency of all test suites for Android.
* Appropriate arguments are now passed through to compiletest to ensure that it
  can run tests.
* When testing the standard library the test executables are probed for and
  shipped to the emulator to run for each test.
* Fixing compilation of compiler-rt a bit

All support added here is modeled after what's found in the makefiles, just
translating one strategy to another. As an added bonus this commit adds support
for the "check" step to automatically run tests for all targets, and the
"check-target" step now runs all tests for a particular target, automatically
filtering the tests if the target is detected as a cross-compile.

Note that we don't (and probably won't) have a bot which is actually going to
exercise any of this just yet, but all tests have passed locally for me at
least.

The ./configure command in README.md's Building Documentation section was
missing the $ prefix. Add the prefix to be consistent with other commands in the
document.

It now prints only unexpected errors and expected errors which weren't found

There isn't anything deprecated being used in this function.

… r=jonathandturner

Add error codes in libsyntax

r? @jonathandturner

Fixes rust-lang#34526

Add rustc-stageN targets to rustbuild

… r=alexcrichton

Improve runtest output

…=alexcrichton

Reject invalid urls in linkchecker

For example root-relative links will now be rejected.

Also remove some exceptions which have since been fixed and fix a typo in
the broken redirect handling.

…rson

rustbuild: Implement testing for Android

This commit enhances the rustbuild support for testing Android to the same level
of parity as the makefiles. This involved:

* A new step to copy the standard library and other shared objects to the
  emulator. This is injected as a dependency of all test suites for Android.
* Appropriate arguments are now passed through to compiletest to ensure that it
  can run tests.
* When testing the standard library the test executables are probed for and
  shipped to the emulator to run for each test.
* Fixing compilation of compiler-rt a bit

All support added here is modeled after what's found in the makefiles, just
translating one strategy to another. As an added bonus this commit adds support
for the "check" step to automatically run tests for all targets, and the
"check-target" step now runs all tests for a particular target, automatically
filtering the tests if the target is detected as a cross-compile.

Note that we don't (and probably won't) have a bot which is actually going to
exercise any of this just yet, but all tests have passed locally for me at
least.

Fix README.md command consistency

The `./configure` command in README.md's Building Documentation section was missing the `$` prefix. Add the prefix to be consistent with other commands in the document.

…ated, r=alexcrichton

remove unneeded allow flag

There isn't anything deprecated being used in this function.

This built fine for me locally, but just to be sure, should check Travis.