libz: add quotation marks to ensure sanity on win32 proper
libz: add quotation marks to ensure sanity on win32 proper

VincentToups/lambdanative,emacstheviking/lambdanative,emacstheviking/lambdanative,emacstheviking/lambdanative,emacstheviking/lambdanative,VincentToups/lambdanative,VincentToups/lambdanative,emacstheviking/lambdanative,VincentToups/lambdanative,VincentToups/lambdanative