MTP: Build flag for setting custom MTP device/path

Change-Id: Ic19ec61dc6cb08df00eb1326d96262b46bb93bfb
Fix handling of MTP fork/child process

Change-Id: Iacd8a38d21e9c8b0dfafefbeb646f46cd3ba02a1
Include no strict aliasing for MTP

Change-Id: I570bb1c1387ec16fb062d7844af12b24c74e3755
Additional checks to prevent partitioning internal storage

Change-Id: I9fcd7e0169fbdd52405c0c86aafbef091f69411e
Merge pull request #4 from omnirom/android-4.4

Update