Export static libraries.

Export static libraries through LOCAL_STATIC_LIBRARIES and
LOCAL_WHOLE_STATIC_LIBRARIES. This enables dependency-based NOTICE file
generation. Also, add a notice property in the libwinpthread module.

Bug: 36073965
Test: cc_test.go
Change-Id: Ic63ca523b40acac82bbe876f7aa40ecd495907c5

android/config.go

@@ -238,6 +238,9 @@ func TestArchConfig(buildDir string, env map[string]string) Config {
 			{BuildOs, Arch{ArchType: X86_64}},
 			{BuildOs, Arch{ArchType: X86}},
 		},
+		Windows: []Target{
+			{Windows, Arch{ArchType: X86}},
+		},
 	}
 
 	config.BuildOsVariant = config.Targets[BuildOs][0].String()