Fix: Framework, tests and elven are not buildable;

 - Xcode 5.1.1;
 - OS X 10.9.2.

Problems:
 1. GCC_ENABLE_OBJC_GC was set to supported in the framework project;
 2. elliptic_license.c wasn't in the compiled sources in the framework project;
 3. elgen project had broken references to elliptic_license(.h and .c).