Use fakeroot to build debs unless run as root

Use 'fakeroot' to build Debian packages when EPM is not
run as root and the 'fakeroot' command is available.
This ensures that ownerships and permisssions inside the
generated package are correct.

deb.c

@@ -584,7 +584,11 @@ make_subpackage(const char     *prodname,
   if (Verbosity)
     printf("Building Debian %s binary distribution...\n", name);
 
-  if (run_command(directory, "dpkg --build %s", name))
+  // run with 'fakeroot' if command available and epm not run as root
+  if (geteuid() && !run_command(NULL, "fakeroot --version")) {
+    if (run_command(directory, "fakeroot dpkg --build %s", name))
+      return (1);
+  } else if (run_command(directory, "dpkg --build %s", name))
     return (1);
 
  /*

epm.c

@@ -558,9 +558,11 @@ main(int  argc,				/* I - Number of command-line args */
         i = make_slackware(prodname, directory, platname, dist, &platform);
 	break;
     case PACKAGE_DEB :
-        if (geteuid())
+        // check whether EPM is run as root or fakeroot is available
+        if (geteuid() && run_command(NULL, "fakeroot --version"))
 	  fputs("epm: Warning - file permissions and ownership may not be correct\n"
-	        "     in Debian packages unless you run EPM as root!\n", stderr);
+                "     in Debian packages unless you run EPM as root or the 'fakeroot'\n"
+                "     command is available!\n", stderr);
 
         i = make_deb(prodname, directory, platname, dist, &platform);
 	break;