Integer Precision for JSON <-> Protobuf conversions.
Integer Precision for JSON <-> Protobuf conversions.

Add `PICOJSON_USE_INT64` and `__STDC_FORMAT_MACROS` flag to mesos
compilation flags.

Review: https://reviews.apache.org/r/38030

zmalik/mesos,verizonlabs/mesos,andschwa/mesos,gsantovena/mesos,jpeach/mesos,andschwa/mesos,kaysoky/mesos,chhsia0/mesos,verizonlabs/mesos,craimbert/mesos,asamerh4/mesos,abudnik/mesos,chhsia0/mesos,neilconway/mesos,chhsia0/mesos,gsantovena/mesos,jpeach/mesos,Aman-Jain-14/customizedMesos,yuquanshan/customizedMesos,dforsyth/mesos,gsantovena/mesos,Gilbert88/mesos,abudnik/mesos,yuquanshan/customizedMesos,asamerh4/mesos,andschwa/mesos,Gilbert88/mesos,gsantovena/mesos,Aman-Jain-14/customizedMesos,zmalik/mesos,craimbert/mesos,reneploetz/mesos,andschwa/mesos,neilconway/mesos,andschwa/mesos,craimbert/mesos,kaysoky/mesos,Aman-Jain-14/customizedMesos,asamerh4/mesos,jpeach/mesos,craimbert/mesos,Gilbert88/mesos,gsantovena/mesos,reneploetz/mesos,kaysoky/mesos,Gilbert88/mesos,neilconway/mesos,verizonlabs/mesos,kaysoky/mesos,Gilbert88/mesos,kaysoky/mesos,verizonlabs/mesos,Gilbert88/mesos,neilconway/mesos,chhsia0/mesos,andschwa/mesos,Aman-Jain-14/customizedMesos,gsantovena/mesos,neilconway/mesos,neilconway/mesos,abudnik/mesos,yuquanshan/customizedMesos,abudnik/mesos,jpeach/mesos,andschwa/mesos,kaysoky/mesos,craimbert/mesos,chhsia0/mesos,yuquanshan/customizedMesos,craimbert/mesos,verizonlabs/mesos,abudnik/mesos,verizonlabs/mesos,Gilbert88/mesos,yuquanshan/customizedMesos,yuquanshan/customizedMesos,asamerh4/mesos,asamerh4/mesos,jpeach/mesos,dforsyth/mesos,neilconway/mesos,craimbert/mesos,dforsyth/mesos,dforsyth/mesos,reneploetz/mesos,reneploetz/mesos,asamerh4/mesos,Aman-Jain-14/customizedMesos,kaysoky/mesos,verizonlabs/mesos,jpeach/mesos,abudnik/mesos,dforsyth/mesos,zmalik/mesos,chhsia0/mesos,Aman-Jain-14/customizedMesos,reneploetz/mesos,abudnik/mesos,dforsyth/mesos,yuquanshan/customizedMesos,asamerh4/mesos,zmalik/mesos,chhsia0/mesos,zmalik/mesos,reneploetz/mesos,jpeach/mesos,zmalik/mesos,zmalik/mesos,dforsyth/mesos,gsantovena/mesos,Aman-Jain-14/customizedMesos,reneploetz/mesos