CA certificates fixes (#28):
* TrustedCertificateStore has now been patched to allow reading system certificates from the classpath (/cacerts/ folder).
* The cacerts Maven module has been added which eventually will contain collections of certificates of varying sizes. Currently there's only a 'full' collection which includes all certs included in Android 4.2.
* A -cacerts command line option has been added to the compiler. If set to 'full' (the default) the 'full' cacerts collection will be bundled with the compiled app (only if TrustedCertificateStore is needed by the app). The user can always provide her own custom cacerts collection by setting -cacerts to 'none' and adding a cacerts jar of her choice to the bootclasspath.