Win32: Update NODE_NET_SOCKET_{READ,WRITE}() macros

They both take 4 arguments, not 2.
Win32: Update NODE_COUNT_GC_PERCENTTIME() macro

It takes a single argument.
Win32 etw: Define and use INTPTR instead of INT32
Win32: Determine and use EXEEXT
Win32 gyp: If sys.platform is 'msys' use make, not msvs