bump version to 2.0.19.1

bumb to 2.0.19

uWSGI 2.0.18

force throttle level to 0 in emperor stats

PKG-INFO to 2.0.16

uWSGI 2.0.14

Revert "Use EPOLLEXCLUSIVE for reading."

This reverts commit b04b828.

Regresses with recent kernels, see unbit#1250

added --cgi-close-stdin-on-eof