SWDEV-419480 - HIPRTC implementation of standard headers shouldn't be in std namespace

HIPRTC implementation of few type traits are defined in std
namespace which causes conflicts with the std C++ headers when
apps try to include those std headers. Instead, use the
specific implementation of these headers from __hip_internal
namespace to avoid this.

Change-Id: Ia358df159af8783d1eba9a19cd458e192bf7e9e6


[ROCm/clr commit: 353dbe6e3b]

projects/clr/hipamd/src/hiprtc/cmake/HIPRTC.cmake

@@ -60,6 +60,13 @@ function(get_hiprtc_macros HIPRTC_DEFINES)
 #define HIP_INCLUDE_HIP_MATH_FUNCTIONS_H\n\
 #define HIP_INCLUDE_HIP_HIP_VECTOR_TYPES_H\n\
 #if !__HIP_NO_STD_DEFS__\n\
+#if defined(_WIN32)\n\
+typedef unsigned long long uint64_t;\n\
+typedef signed long long int64_t;\n\
+#else\n\
+typedef unsigned long uint64_t;\n\
+typedef signed long int64_t;\n\
+#endif\n\
 #if defined(__HIPRTC_PTRDIFF_T_IS_LONG_LONG__) && __HIPRTC_PTRDIFF_T_IS_LONG_LONG__==1\n\
 typedef long long ptrdiff_t;\n\
 #else\n\
@@ -67,6 +74,8 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;\n\
 #endif\n\
 typedef long clock_t;\n\
 namespace std {\n\
+using ::uint64_t;\n\
+using ::int64_t;\n\
 using ::ptrdiff_t;\n\
 using ::clock_t;\n\
 }\n\