Remove split code from Mavlink library
Squashed 'Mavlink/' content from commit 684e44a

git-subtree-dir: Mavlink
git-subtree-split: 684e44a4d31779d1051f8fc7e2e3e5800ef14253
Merge Mavlink library into /Mavlink folder, used data from commit 'f1161b78adc0699c81a1747a2c180b29062c80bb' as 'Mavlink'
Removing both submodules, so they can be re-added as git subtrees
Squashed 'usb-serial-for-android/' content from commit 38a2a01

git-subtree-dir: usb-serial-for-android
git-subtree-split: 38a2a0165a729d669d7d1fe036fba65bf4b6c422
Merge Usb-Serial-For-Android library to '/usb-serial-for-android' , used data from the current master squashed as commit 'bb3ca97c44f8ffc35ace531cf576cea9ce48cc8c'
Squashed 'HorizontalVariableListView/' content from commit 5f99a66

git-subtree-dir: HorizontalVariableListView
git-subtree-split: 5f99a665426f391ba175f34c4d528bfec36519ff
Merge HorizontalVariableListView library to 'HorizontalVariableListView/', used data from the current master squashed as commit '20d0ba59dffff17721c017b72ef7ac041c372a71'
Eclipse: Core project should be treated as an android library