Test fixes for modern static libraries.

Unfortunately static executables with libc++ will require API > 26 to
avoid libandroid_support. Fortunately this doesn't actually cause any
issues except in the case of having a static executable in the same
project as other non-static executable modules.

Test: ./run_tests.py
Bug: http://b/24507500
Bug: android/ndk#593
Change-Id: I925dac426a41326c76bddec691ba8ce227ba5370
(cherry picked from commit d0dd54a20855dcb9cfdcda2c129edf1e4d2f42bb)

tests/device/static-executable-exceptions/jni/Application.mk

@@ -0,0 +1 @@
+APP_PLATFORM := android-21

tests/device/static-executable-exceptions/test_config.py

@@ -1,7 +1,13 @@
-def run_broken(abi, _device_api, toolchain, _subtest):
-    if abi == 'armeabi-v7a':
-        # __gnu_Unwind_Find_exidx has always been broken in libc.a. We need an
-        # update to the static libraries to fix this.
-        return abi, 'https://github.com/android-ndk/ndk/issues/593'
+def extra_cmake_flags():
+    # Clang does the right thing if you provide `-pie -static`, but GCC throws
+    # an error.
+    return ['-DANDROID_PIE=OFF']
 
-    return None, None
+
+def build_unsupported(_abi, api, _toolchain):
+    # Static executables with libc++ require targeting a new enough API level
+    # to not need libandroid_support.
+    if api < 21:
+        return 'android-{}'.format(api)
+
+    return None