Use vld native set for IgnoreFunctionsSet (#22)

* Use native Set for ignore functions

* Address Review and add gTest for the uts

* fix braces

Co-authored-by: Cyrus Jackson <cyjackso@microsoft.com>

Fix AV in FindRealCode due to incorrect restore of page protection flags

Update changelog (#9)

Merge pull request #2 from Azure/virtual_query_perf

Changes for 2.5.6 to improve performance

2.5.1

Version changed

Path to binaries fixed

Copyright string updated

Change log updated

git-tfs-id: [https://tfs.codeplex.com/tfs/TFS07]$/vld/vld/trunk;C74992