Cleaning up gtest.xcode. Removing old tests, using gtest-all.cc, adding a static libgtest.a and a static libgtest_main.a, fixing the sample code to work with changes.

xcode/Config/StaticLibraryTarget.xcconfig

@@ -0,0 +1,15 @@
+//
+//  StaticLibraryTarget.xcconfig
+//
+//  These are static library target settings for libgtest.a. It
+//  is set in the "Based On:" dropdown in the "Target" info dialog.
+//  This file is based on the Xcode Configuration files in:
+//  http://code.google.com/p/google-toolbox-for-mac/
+// 
+
+// Static libs can be included in bundles so make them position independent
+GCC_DYNAMIC_NO_PIC = NO
+
+// Static libs should not have their internal globals or external symbols
+// stripped.
+STRIP_STYLE = debugging