install: treat target as file by default instead of dir

When using 'install foo bar', bar should be treated as a file copy of
foo, not a directory to be created and into which install foo.

xinstall.1

@@ -31,7 +31,9 @@ If more than one
 .Ar source
 is given
 .Ar dest
-has to be a directory.
+is treated as a directory. Otherwise
+.Ar dest
+is treated as a filename.
 .Nm
 can also change the attributes of the copies.
 .Sh OPTIONS
@@ -43,10 +45,8 @@ Create the directories
 Create missing parent directories to
 .Ar dest .
 If
-.Fl t
-is used, the
 .Ar dest
-itself is also created if missing.
+is to be treated as a directory, it is created too if missing.
 .It Fl g Ar group
 Change the installed files' group to
 .Ar group .

xinstall.c

@@ -247,8 +247,6 @@ main(int argc, char *argv[])
 					make_dirs(argv[argc - 1], 1);
 					*p = '/';
 				}
-			} else {
-				make_dirs(argv[argc - 1], 1);
 			}
 		}
 		enmasse(argc, argv, install);