Function SkipBitcodeWrapperHeader

SkipBitcodeWrapperHeader - Some systems wrap bc files with a special header for padding or other reasons. The format of this header is: struct bc_header { uint32_t Magic; // 0x0B17C0DE uint32_t Version; // Version, currently always 0. uint32_t BitcodeOffset; // Offset to traditional bitcode file. uint32_t BitcodeSize; // Size of traditional bitcode file. ... potentially other gun