[Clang] Add locale variants to libc offload wrappers

Summary:
These need to be present now that the GPU "supports" them (only for the
default POSIX locale).

clang/lib/Headers/llvm_libc_wrappers/ctype.h

@@ -51,6 +51,19 @@
 #pragma push_macro("toascii")
 #pragma push_macro("tolower")
 #pragma push_macro("toupper")
+#pragma push_macro("isalnum_l")
+#pragma push_macro("isalpha_l")
+#pragma push_macro("isascii_l")
+#pragma push_macro("isblank_l")
+#pragma push_macro("iscntrl_l")
+#pragma push_macro("isdigit_l")
+#pragma push_macro("isgraph_l")
+#pragma push_macro("islower_l")
+#pragma push_macro("isprint_l")
+#pragma push_macro("ispunct_l")
+#pragma push_macro("isspace_l")
+#pragma push_macro("isupper_l")
+#pragma push_macro("isxdigit_l")
 
 #undef isalnum
 #undef isalpha
@@ -68,6 +81,18 @@
 #undef toascii
 #undef tolower
 #undef toupper
+#undef isalnum_l
+#undef isalpha_l
+#undef iscntrl_l
+#undef isdigit_l
+#undef islower_l
+#undef isgraph_l
+#undef isprint_l
+#undef ispunct_l
+#undef isspace_l
+#undef isupper_l
+#undef isblank_l
+#undef isxdigit_l
 
 #pragma omp begin declare target
 
@@ -93,6 +118,19 @@
 #pragma pop_macro("toascii")
 #pragma pop_macro("tolower")
 #pragma pop_macro("toupper")
+#pragma pop_macro("isalnum_l")
+#pragma pop_macro("isalpha_l")
+#pragma pop_macro("isascii_l")
+#pragma pop_macro("isblank_l")
+#pragma pop_macro("iscntrl_l")
+#pragma pop_macro("isdigit_l")
+#pragma pop_macro("isgraph_l")
+#pragma pop_macro("islower_l")
+#pragma pop_macro("isprint_l")
+#pragma pop_macro("ispunct_l")
+#pragma pop_macro("isspace_l")
+#pragma pop_macro("isupper_l")
+#pragma pop_macro("isxdigit_l")
 #endif
 
 #undef __LIBC_ATTRS