Use __RENAME for long double functions.

We can cut a lot of stuff out of the NDK's libandroid_support with this,
and reduce unnecessary relocations for all LP32 code. LP64 code should
be unaffected.

Bug: https://issuetracker.google.com/64450768
Bug: https://github.com/android-ndk/ndk/issues/507
Test: ran tests, plus manual readelf on the _test.o files
Change-Id: I3de6015921195304ea9c829ef31665cd34664066
diff --git a/tests/Android.bp b/tests/Android.bp
index 075822a..3731156 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -57,6 +57,7 @@
         "buffer_tests.cpp",
         "bug_26110743_test.cpp",
         "complex_test.cpp",
+        "complex_force_long_double_test.cpp",
         "ctype_test.cpp",
         "dirent_test.cpp",
         "elf_test.cpp",
@@ -84,6 +85,7 @@
         "locale_test.cpp",
         "malloc_test.cpp",
         "math_test.cpp",
+        "math_force_long_double_test.cpp",
         "mntent_test.cpp",
         "netdb_test.cpp",
         "net_if_test.cpp",