fix issue microsoft#184

fix issue microsoft#179

stable release 1.2: improved security

merge from dev

stable release 1.1

roll back commit 3d8c331 and start region search from last idx per th…

…read

pre-release 8: new windows dynamic override; initial huge page support

pre-release 7: last version before new windows override

pre-release 6: small performance improvements

pre release 5, using regions for OS memory allocation