icdiff 1.5.3

Closes #34879.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
libbpg 0.9.2

Closes #34880.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
libbpg: update 0.9.2 bottle.
mach: handle empty otool output.
pebble-sdk 2.8.1

Bump pebble-sdk to version 2.8.1.

Also updated pyserial requirement to the latest compatible version, 2.7.

Closes #34887.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
pebble-sdk: update 2.8.1 bottle.
mach: improve otool failure handling.
pyenv 20141211

Upgrade pyenv to v20141211

Closes #34889.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
sqlite 3.8.7.4

release log (from https://www.sqlite.org/releaselog/3_8_7_4.html):
- Bug fix: Add in a mutex that was omitted from the previous release.

Closes #34890.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
sqlite: update 3.8.7.4 bottle.
Merge remote-tracking branch 'upstream/master'