Revert "Correct mac toolchain date/note field"

This reverts commit 3dec5ef20f2cde2f1cfbe9d201e478b5dc67c3c8.
Revert "correct date/note fields for m4"

This reverts commit 3f3a12fd2dbeb29660c2a6c110e708d98c5a5486.
Revert "Add m4 builds"

This reverts commit 6b4e40964ebd9a92afb3ce75a6deea03f63f5df1.
Merge branch 'refs/heads/staging'
Merge branch 'refs/heads/staging'
Add clang version 3.2 to linux json file
Add clang version c250d8b6c0aba5ae481526606084bb3112c3e6ff
Merge remote-tracking branch 'origin/staging'
update gdb current (t a a bt, next not step into); rotate stable to old current
update to latest clang build
gdb - sdk backtraces and C++ print inf loop fix
Update linux clang build
Update to statically linked gdbserver to solve Android 4.4 crashes
sort keys
add hash
add hash
Update gdb (get_val fix)
sort keys and reformat using python
add NDK r9c, but not as current version
Add ninja and zipbuilder to the binary toolchain.