Relax Linux checks for the code works on any non-Windows platform

In file included from level_zero/tools/source/pin/pin.cpp:11:
level_zero/source/inc/ze_intel_gpu.h:34:2: error: "Unsupported OS"
#error "Unsupported OS"
 ^
level_zero/api/core/ze_core_loader.cpp:29:41: error: use of undeclared identifier 'LOAD_INTEL_GPU_LIBRARY'
        driver_ddiTable.driverLibrary = LOAD_INTEL_GPU_LIBRARY();
                                        ^

core/elf/writer.cpp:54:9: error:
      use of undeclared identifier 'memcpy_s'
        memcpy_s(data, queueFront.dataSize, queueFront.data.c_str(), queueFront.dataSize);
        ^
core/elf/writer.cpp:59:13: error:
      use of undeclared identifier 'memcpy_s'
            memcpy_s(curString, queueFront.name.size(), queueFront.name.c_str(), queueFront.name.size());
            ^
core/elf/writer.cpp:76:5: error:
      use of undeclared identifier 'memcpy_s'
    memcpy_s(curSectionHeader, sizeof(SElf64SectionHeader),
    ^

--- shared/source/helpers/string.h.orig	2020-02-28 16:16:42 UTC
+++ shared/source/helpers/string.h
@@ -10,7 +10,7 @@
 #include <memory>
 #include <type_traits>
 
-#if defined(__linux__)
+#if !defined(_WIN32)
 
 #include <cstring>
 #include <errno.h>