E2E tests failing on Windows because of -Werror and getenv

[ProGTX]

Describe the bug

error: 'getenv' is deprecated in many E2E tests on Windows on the OpenCL CPU device. Relates to #14689 .

FAIL: SYCL :: Regression/device_num.cpp (1734 of 2127)
******************** TEST 'SYCL :: Regression/device_num.cpp' FAILED ********************
Exit Code: 1

Command Output (stdout):
--
# RUN: at line 1
C:/builds/peter/intel-llvm-mirror/build/bin/clang++ -DWIN32 -D_WINDOWS -Werror  -fsycl -fsycl-targets=spir64  C:\builds\peter\intel-llvm-mirror\sycl\test-e2e\Regression\device_num.cpp -o C:\builds\peter\intel-llvm-mirror\build\tools\sycl\test-e2e\Regression\Output\device_num.cpp.tmp.out
# executed command: C:/builds/peter/intel-llvm-mirror/build/bin/clang++ -DWIN32 -D_WINDOWS -Werror -fsycl -fsycl-targets=spir64 'C:\builds\peter\intel-llvm-mirror\sycl\test-e2e\Regression\device_num.cpp' -o 'C:\builds\peter\intel-llvm-mirror\build\tools\sycl\test-e2e\Regression\Output\device_num.cpp.tmp.out'
# .---command stderr------------
# | C:\builds\peter\intel-llvm-mirror\sycl\test-e2e\Regression\device_num.cpp:136:7: error: 'getenv' is deprecated: This function or variable may be unsafe. Consider using _dupenv_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. [-Werror,-Wdeprecated-declarations]
# |   136 |   if (getenv("PRINT_FULL_DEVICE_INFO")) {

Failed Tests (15):
  SYCL :: Config/allowlist.cpp
  SYCL :: Config/env_vars.cpp
  SYCL :: FilterSelector/select_device_cpu.cpp
  SYCL :: Regression/device_num.cpp
  SYCL :: XPTI/buffer/accessors.cpp
  SYCL :: XPTI/buffer/host_array.cpp
  SYCL :: XPTI/buffer/in_cycle.cpp
  SYCL :: XPTI/buffer/multiple_buffers.cpp
  SYCL :: XPTI/buffer/multiple_queues.cpp
  SYCL :: XPTI/buffer/recursion.cpp
  SYCL :: XPTI/buffer/sub_buffer.cpp
  SYCL :: XPTI/buffer/use_host_ptr.cpp
  SYCL :: XPTI/image/accessors.cpp
  SYCL :: XPTI/kernel/basic.cpp
  SYCL :: XPTI/kernel/content.cpp

To reproduce

$env:LIT_FILTER="<one of the tests>"
$env:ONEAPI_DEVICE_SELECTOR="opencl:cpu"
ninja check-sycl-e2e

Environment

• OS: Windows
• Target device and vendor: Intel OpenCL CPU
• DPC++ version: de0260f

Additional context

No response

[uditagarwal97]

@ayylol FYI

[againull]

Fixed by @ayylol in #15226 and #15234