Added a pre-built library for easier distribution

The library includes the architectures listed below :

```
>>> file libXCode5gcovPatch.a
libXCode5gcovPatch.a: Mach-O universal binary with 5 architectures

libXCode5gcovPatch.a (for architecture armv7):	current ar archive random library
libXCode5gcovPatch.a (for architecture armv7s):	current ar archive random library
libXCode5gcovPatch.a (for architecture i386):	current ar archive random library

libXCode5gcovPatch.a (for architecture x86_64):	current ar archive random library
libXCode5gcovPatch.a (for architecture cputype (16777228) cpusubtype (0)):	current ar archive random library
```