Optimising request list - can spend 4-5% of time manipulating the linked lists. Streamline list manipulation logic. Use memory pool to avoid malloc/free on critical path.
Optimising request list - can spend 4-5% of time manipulating the linked lists.
Streamline list manipulation logic.
Use memory pool to avoid malloc/free on critical path.

git-svn-id: 51d371801c0de2a0625fbca80cd99d181c32913f@10123 dc4e9af1-7f46-4ead-bba6-71afc04862de

JohnPJenkins/swift-t,blue42u/swift-t,JohnPJenkins/swift-t,JohnPJenkins/swift-t,basheersubei/swift-t,basheersubei/swift-t,blue42u/swift-t,swift-lang/swift-t,blue42u/swift-t,blue42u/swift-t,basheersubei/swift-t,swift-lang/swift-t,JohnPJenkins/swift-t,JohnPJenkins/swift-t,basheersubei/swift-t,swift-lang/swift-t,basheersubei/swift-t,swift-lang/swift-t,basheersubei/swift-t,blue42u/swift-t,JohnPJenkins/swift-t,swift-lang/swift-t,swift-lang/swift-t,basheersubei/swift-t,JohnPJenkins/swift-t,blue42u/swift-t,blue42u/swift-t,swift-lang/swift-t