v1.5.2-kernel
Fix typos
updated .gitignore rule
Update BUCK files
streamline zlibwrapper makefile
Spelling (#1582)
enforce C90 compatibility for zlibWrapper
[license] Update year to 2021
Include unistd.h on unix platforms for explicit function declaration
updated tests for zlibwrapper C90 strict compatibility
fix zlibWrapper for Visual Studio
Z_PREFIX zError function