Fix pod link fail due to missing C++ symbols (fix #92)
Fix pod link fail due to missing C++ symbols (fix #92)

* Fix the unexpected libc++ dependency.

* Prevent C++ build warning with a separate C++ subspec.

* Update pod spec to 8.0.3.

boherna/zipzap,rileytestut/ZipZap,treejames/ZipZap,mpapp/ZipZap,ClioMobile/ZipZap,pixelglow/zipzap,Doxxer/ZipZap,pixelglow/ZipZap