Instead of sending the whole tree upfront use the same
streaming interface for it as for the data blocks
This improves installation speed by almost 200ms,
650-800ms -> 500-600ms
Bug: 153696423
Test: manual, adb install in various configurations
Change-Id: Ia83de2af54ca0b1969397514ea5d761719af9055
Use only the syscalls that work with the wrapped ADB fds, or
extract the native handles for the case when need to call one
not wrapped.
Bug: 151239696
Test: adb install --incremental <apk> on Windows
Change-Id: Ia6de620171ab696b8136dcb60a2b63af6f86419f
Before this change, "Success" is returned after all data is streamed,
around 7.5 seconds for Megacity.
After this change, "Success" is returned in about 1.5 seconds, before
streaming finishes.
BUG: 151676293
Test: manual
Change-Id: Ifda7de48da8e82623c99ae0194f70cb162fd72fa
