Relocate libc++ libraries to keep Soong happy.

These were removed from sources/ in the NDK because they're duplicate
bloat. Rather than fixing up Soong to handle this, just relocate them
to the place Soong expects them. This directory should be gone soon
anyway.

Bug: None
Test: None
Change-Id: I2ae26513bfbda2f0b206ea24a8a8904ee85de5d8
1 file changed