Reduced Carthage download size of BMSCore.framework
Reduced Carthage download size of BMSCore.framework

- BMSCore build setting "embedded content contains swift" was causing all Swift libraries (~50 MB) to be included with BMSCore.framework when installing via Carthage
- Affected iOS only

ibm-bluemix-mobile-services/bms-clientsdk-swift-core,ibm-bluemix-mobile-services/bms-clientsdk-swift-core,ibm-bluemix-mobile-services/bms-clientsdk-swift-core