[bazel][libc] Add errno target to function_deps of tests.

[sivachandra]

Summary

Existing listings in normal deps have been removed.

utils/bazel/llvm-project-overlay/libc/test/libc_test_rules.bzl

def libc_test(name, srcs, libc_function_deps, deps = [], **kwargs):
 
     Args:
       name: Test target name
       srcs: List of sources for the test.
       libc_function_deps: List of libc_function targets used by this test.
       deps: The list of other libraries to be linked in to the test target.
       **kwargs: Attributes relevant for a cc_test. For example, name, srcs.
     """
+    all_function_deps = libc_function_deps + ["//libc:errno"]
     native.cc_test(
         name = name,
         srcs = srcs,
-        deps = [d + INTERNAL_SUFFIX for d in libc_function_deps] + [
+        deps = [d + INTERNAL_SUFFIX for d in all_function_deps] + [
             "//libc:libc_root",
             "//libc/test/UnitTest:LibcUnitTest",
         ] + deps,
         features = ["-link_llvmlibc"],  # Do not link libllvmlibc.a
         **kwargs
     )

utils/bazel/llvm-project-overlay/libc/test/src/math/libc_math_test_rules.bzl

libc_test(
             "//libc:__support_builtin_wrappers",
             "//libc:__support_fputil_basic_operations",
             "//libc:__support_fputil_fenv_impl",
             "//libc:__support_fputil_float_properties",
             "//libc:__support_fputil_fp_bits",
             "//libc:__support_fputil_manipulation_functions",
             "//libc:__support_fputil_nearest_integer_operations",
             "//libc:__support_uint128",
-            "//libc:errno",
             "//libc/test/UnitTest:fp_test_helpers",
         ] + deps,
         **kwargs
     )

utils/bazel/llvm-project-overlay/libc/test/src/stdlib/BUILD.bazel

 libc_test(
     name = "atof_test",
     srcs = ["atof_test.cpp"],
     libc_function_deps = [
         "//libc:atof",
     ],
     deps = [
         "//libc:__support_fputil_fp_bits",
-        "//libc:errno",
     ],
 )
 
 libc_test(
     name = "bsearch_test",
     srcs = ["bsearch_test.cpp"],
     libc_function_deps = [
         "//libc:bsearch",

 )
 
 cc_library(
     name = "strtol_test_helper",
     hdrs = ["StrtolTest.h"],
     deps = [
         "//libc:__support_cpp_limits",
         "//libc:__support_cpp_type_traits",
-        "//libc:errno",
         "//libc/test/UnitTest:LibcUnitTest",
     ],
 )
 
 libc_test(
     name = "strtol_test",
     srcs = ["strtol_test.cpp"],
     libc_function_deps = [

 libc_test(
     name = "strtof_test",
     srcs = ["strtof_test.cpp"],
     libc_function_deps = [
         "//libc:strtof",
     ],
     deps = [
         "//libc:__support_fputil_fp_bits",
-        "//libc:errno",
         "//libc/utils/testutils:libc_test_utils",
     ],
 )
 
 libc_test(
     name = "strtod_test",
     srcs = ["strtod_test.cpp"],
     libc_function_deps = [
         "//libc:strtod",
     ],
     deps = [
         "//libc:__support_fputil_fp_bits",
-        "//libc:errno",
         "//libc/utils/testutils:libc_test_utils",
     ],
 )
 
 libc_test(
     name = "strtold_test",
     srcs = ["strtold_test.cpp"],
     libc_function_deps = [
         "//libc:strtold",
     ],
     deps = [
         "//libc:__support_fputil_fp_bits",
         "//libc:__support_uint128",
-        "//libc:errno",
     ],
 )