Performance improvements, and handling all architectures
Performance improvements, and handling all architectures

- Better compiler flags (more performant) especially DNDEBUG for stripping debug
statements

- Let's have both x86_64 AND i386 architectures (for iPad2 and iPhone5/5s sims)

Swiftosis/WebP-iOS-example,makkajai/WebP-iOS-example,Swiftosis/WebP-iOS-example,fishboil/WebP-iOS-example,carsonmcdonald/WebP-iOS-example,Swiftosis/WebP-iOS-example,Swiftosis/WebP-iOS-example,makkajai/WebP-iOS-example