added support for LLVMBuildAggregateRet
added LLVMBuildBinOp
added LLVMGetGC, LLVMGetValueName, LLVMGetSection
added LLVMBuildInvoke and LLVMGetParamTypes
added LLVMGetStructElementTypes
added LLVMGetParams
added LLVMGetBasicBlocks