Add basic test on -h for all the commands

pkg/obioptions/options.go

@@ -76,7 +76,7 @@ func GenerateOptionParser(optionset ...func(*getoptions.GetOpt)) ArgumentParser
 
 		if options.Called("help") {
 			fmt.Fprint(os.Stderr, options.Help())
-			os.Exit(1)
+			os.Exit(0)
 		}
 
 		if options.Called("version") {

pkg/obioptions/version.go

@@ -8,7 +8,7 @@ import (
 // corresponds to the last commit, and not the one when the file will be
 // commited
 
-var _Commit = "b18c9b7"
+var _Commit = "65bd29b"
 var _Version = "Release 4.4.0"
 
 // Version returns the version of the obitools package.