[split]  Files.readBytes fixes  - don't leak file handles  - don't overallocate buffers
[split]  Files.readBytes fixes  - don't leak file handles  - don't overallocate buffers

RB_ID=124520

nkhuyu/util,nkhuyu/util,edombowsky/util,nkhuyu/util,Jiri-Kremser/util,BuoyantIO/twitter-util,cogitate/twitter-util-uuid,wuqiangxjtu/util,travisbrown/util,folone/util,Jiri-Kremser/util,stremlenye/util,Jiri-Kremser/util,LitmusHealth/twitter-utils,twitter/util,hydro2k/util,slackhappy/util,slackhappy/util,slackhappy/util,travisbrown/util,RUNDSP/util,mosesn/util,nkhuyu/util,hydro2k/util,stremlenye/util,RUNDSP/util,BuoyantIO/twitter-util,cogitate/twitter-util-uuid,travisbrown/util,wuqiangxjtu/util,travisbrown/util,LitmusHealth/twitter-utils,twitter/util,LitmusHealth/twitter-utils,LitmusHealth/twitter-utils,luciferous/util,slackhappy/util,folone/util,luciferous/util,BuoyantIO/twitter-util,tdyas/util,luciferous/util,RUNDSP/util,edombowsky/util,Jiri-Kremser/util,wuqiangxjtu/util,folone/util,tenghuihua/util,luciferous/util,cogitate/twitter-util-uuid,hydro2k/util,folone/util,tdyas/util,RUNDSP/util,tenghuihua/util,mosesn/util,BuoyantIO/twitter-util,wuqiangxjtu/util,tdyas/util,tenghuihua/util,stremlenye/util,hydro2k/util,twitter/util,edombowsky/util,edombowsky/util,stremlenye/util,mosesn/util,cogitate/twitter-util-uuid,tdyas/util,tenghuihua/util