Update build-tools to ab/4449370

Reason for update is the ninja patch to fix dep recompaction:
https://android.googlesource.com/platform/external/ninja/+/495fcf4b799d84d8727ce0e185950ace29a6ea11

Test: m
Change-Id: I6bbcb081c1ce2bb825519e791d80805cd4ada47a
38 files changed
tree: 4ed40d353019c8d0046402a0c8fbe515926a450c
  1. common/
  2. darwin-x86/
  3. linux-x86/
  4. build-prebuilts.sh
  5. manifest.xml
  6. OWNERS