cleanup wmake scripts

- match comments to names of scripts
  - remove comments about using C-shell (not true anymore)
  - use 'assert' style syntax in places instead of if/then/fi
  - wcleanMachine supports multiple arguments

wmake/scripts/mkObjectDir

@@ -27,15 +27,13 @@
 #     mkObjectDir
 #
 # Description
-#     Makes a directory hierachy for the given object file
-#     It has to be written in the C-shell rather than the Bourne shell
-#     because it uses file name manipulators.
+#     Makes a directory hierarchy for the given object file
 #
 #     Usage: mkObjectDir <directory>
 #
 #------------------------------------------------------------------------------
 
-if [ $# = 1 ]
+if [ $# -eq 1 ]
 then
     if [ ! -d ${1%/*} -a $1 != ${1%/*} ]
     then