Imports of asmvet command

PathSynopsis
golang.org/x/tools/go/analysis/passes/asmdeclPackage asmdecl defines an Analyzer that reports mismatches between assembly files and Go declarations.
golang.org/x/tools/go/analysis/passes/framepointerPackage framepointer defines an Analyzer that reports assembly code that clobbers the frame pointer before saving it.
golang.org/x/tools/go/analysis/unitcheckerThe unitchecker package defines the main function for an analysis driver that analyzes a single compilation unit during a build.