rename jl_tls_offset in sysimage to avoid naming clash with libjulia-internal (#49442)

Author: KristofferC

src/llvm-ptls.cpp

@@ -329,7 +329,7 @@ bool LowerPTLS::run(bool *CFGModified)
             if (imaging_mode) {
                 pgcstack_func_slot = create_aliased_global(T_pgcstack_getter, "jl_pgcstack_func_slot");
                 pgcstack_key_slot = create_aliased_global(getSizeTy(M->getContext()), "jl_pgcstack_key_slot"); // >= sizeof(jl_pgcstack_key_t)
-                pgcstack_offset = create_aliased_global(getSizeTy(M->getContext()), "jl_tls_offset");
+                pgcstack_offset = create_aliased_global(getSizeTy(M->getContext()), "jl_tls_offset_image");
             }
             need_init = false;
         }

src/staticdata.c

@@ -481,7 +481,7 @@ static void jl_load_sysimg_so(void)
         jl_pgcstack_getkey((jl_get_pgcstack_func**)pgcstack_func_slot, (jl_pgcstack_key_t*)pgcstack_key_slot);
 
         size_t *tls_offset_idx;
-        jl_dlsym(jl_sysimg_handle, "jl_tls_offset", (void **)&tls_offset_idx, 1);
+        jl_dlsym(jl_sysimg_handle, "jl_tls_offset_image", (void **)&tls_offset_idx, 1);
         *tls_offset_idx = (uintptr_t)(jl_tls_offset == -1 ? 0 : jl_tls_offset);
 
 #ifdef _OS_WINDOWS_
@@ -3475,7 +3475,7 @@ JL_DLLEXPORT jl_value_t *jl_restore_package_image_from_file(const char *fname, j
         jl_pgcstack_getkey((jl_get_pgcstack_func**)pgcstack_func_slot, (jl_pgcstack_key_t*)pgcstack_key_slot);
 
         size_t *tls_offset_idx;
-        jl_dlsym(pkgimg_handle, "jl_tls_offset", (void **)&tls_offset_idx, 1);
+        jl_dlsym(pkgimg_handle, "jl_tls_offset_image", (void **)&tls_offset_idx, 1);
         *tls_offset_idx = (uintptr_t)(jl_tls_offset == -1 ? 0 : jl_tls_offset);
     }