add option for max pool size

Change-Id: Ida199e861c30f351df89c2f0ed62ac3e0015238a
Merge remote-tracking branch 'koush/master' into cm-10.2
AsyncSSLSocketWrapper: properly recycle buffers.
ByteBufferList: add option to tweak max size of reclaimed ByteBuffer.

Change-Id: I109b2eb2cedd77c6228ad020260a044edf3e2118
Merge branch 'master' of https://github.com/koush/AndroidAsync

# By Koushik Dutta
# Via Koushik Dutta
* 'master' of https://github.com/koush/AndroidAsync:
  AsyncSSLSocketWrapper: properly recycle buffers. ByteBufferList: add option to tweak max size of reclaimed ByteBuffer.
  add option for max pool size