Bug 497435 - [http servlet] performance optimizations, CPU and memory

https://issues.liferay.com/browse/LPS-66801
https://issues.liferay.com/browse/LPS-66813
https://issues.liferay.com/browse/LPS-66827
https://issues.liferay.com/browse/LPS-66847
https://issues.liferay.com/browse/LPS-66881
https://issues.liferay.com/browse/LPS-66903
https://issues.liferay.com/browse/LPS-66904
https://issues.liferay.com/browse/LPS-66908
https://issues.liferay.com/browse/LPS-66911
https://issues.liferay.com/browse/LPS-66959

Signed-off-by: shuyangzhou <shuyang.zhou@liferay.com>
Signed-off-by: Matthew Tambara <matthew.tambara@liferay.com>
Signed-off-by: Raymond Auge <raymond.auge@liferay.com>

Change-Id: I18d937aefdc72695c5c0f2e8e6e90c77ba3984a6
8 files changed