译文：
system/目录的目的在于向android的核心当中嵌入linux平台的内核。这些高效的比特
码被要求用于基础的启动、操作以及调试。它们不应该依赖于system/目录以外的库（现在它们中的有一些不符合这个规定，这些
应该被升级或者替换）而且它们不应该被仿真编译要求。
所有的许可证应该都被清空（Apache2、BSD或者MIT）。
现在system/bluetooth/...和system/extra/...有一些GPL/LGPL的许可证代码片段
不同的发行：
- pppd依赖于libutils库来记录日志
- pppd依赖于libcrypt/libcrypto
- init,linker,debuggerd,toolbox,usbd依赖于libcutils
- 也许应该把bionic重命名为libc
原文：
The system/ directory is intended for pieces of the world that are the
core of the embedded linux platform at the heart of Android. These
essential bits are required for basic booting, operation, and debugging.
They should not depend on libraries outside of system/... (some of them
do currently -- they need to be updated or changed) and they should not
be required for the simulator build.
The license for all these pieces should be clean (Apache2, BSD, or MIT).
Currently system/bluetooth/... and system/extra/... have some pieces
with GPL/LGPL licensed code.
Assorted Issues:
- pppd depends on libutils for logging
- pppd depends on libcrypt/libcrypto
- init, linker, debuggerd, toolbox, usbd depend on libcutils
- should probably rename bionic to libc