merge(3p/absl): subtree merge of Abseil up to e19260f

... notably, this includes Abseil's own StatusOr type, which
conflicted with our implementation (that was taken from TensorFlow).

Change-Id: Ie7d6764b64055caaeb8dc7b6b9d066291e6b538f

third_party/abseil_cpp/absl/base/BUILD.bazel

@@ -24,7 +24,7 @@ load(
 
 package(default_visibility = ["//visibility:public"])
 
-licenses(["notice"])  # Apache 2.0
+licenses(["notice"])
 
 cc_library(
     name = "atomic_hook",
@@ -116,7 +116,6 @@ cc_library(
 cc_library(
     name = "dynamic_annotations",
     srcs = [
-        "dynamic_annotations.cc",
         "internal/dynamic_annotations.h",
     ],
     hdrs = [
@@ -126,6 +125,7 @@ cc_library(
     linkopts = ABSL_DEFAULT_LINKOPTS,
     deps = [
         ":config",
+        ":core_headers",
     ],
 )
 
@@ -161,6 +161,7 @@ cc_library(
     copts = ABSL_DEFAULT_COPTS,
     linkopts = select({
         "//absl:windows": [],
+        "//absl:wasm": [],
         "//conditions:default": ["-pthread"],
     }) + ABSL_DEFAULT_LINKOPTS,
     visibility = [
@@ -222,6 +223,7 @@ cc_library(
         "//absl:windows": [
             "-DEFAULTLIB:advapi32.lib",
         ],
+        "//absl:wasm": [],
         "//conditions:default": ["-pthread"],
     }) + ABSL_DEFAULT_LINKOPTS,
     deps = [
@@ -413,6 +415,7 @@ cc_library(
     deps = [
         ":base",
         ":base_internal",
+        ":config",
         ":core_headers",
         "//absl/synchronization",
         "@com_google_googletest//:gtest",
@@ -429,6 +432,7 @@ cc_test(
     deps = [
         ":base",
         ":base_internal",
+        ":config",
         ":core_headers",
         "//absl/synchronization",
         "@com_google_googletest//:gtest_main",