add system calls back

apt-pkg/contrib/fileutl.cc

@@ -130,7 +130,7 @@ bool RunScripts(const char *Cnf)
             std::clog << "Running external script: '"
                       << Opts->Value << "'" << std::endl;
 
-	 if (RunCmd(Opts->Value.c_str()) != 0)
+	 if (system(Opts->Value.c_str()) != 0)
 	    _exit(100+Count);
       }
       _exit(0);

apt-private/private-source.cc

@@ -533,7 +533,7 @@ bool DoSource(CommandLine &CmdL)
 	    strprintf(S, "%s %s %s",
 		  _config->Find("Dir::Bin::dpkg-source","dpkg-source").c_str(),
 		  sourceopts.c_str(), Dsc[I].Dsc.c_str());
-	    if (RunCmd(S.c_str()) != 0)
+	    if (system(S.c_str()) != 0)
 	    {
 	       fprintf(stderr, _("Unpack command '%s' failed.\n"), S.c_str());
 	       fprintf(stderr, _("Check if the 'dpkg-dev' package is installed.\n"));
@@ -562,7 +562,7 @@ bool DoSource(CommandLine &CmdL)
 		  _config->Find("Dir::Bin::dpkg-buildpackage","dpkg-buildpackage").c_str(),
 		  buildopts.c_str());
 
-	    if (RunCmd(S.c_str()) != 0)
+	    if (system(S.c_str()) != 0)
 	    {
 	       fprintf(stderr, _("Build command '%s' failed.\n"), S.c_str());
 	       _exit(1);