STYLE: adjust log name for 'Allwmake -log' (issue #333)

- now defaults to 'log.$WM_OPTIONS' (eg, log.linux64GccDPInt32Opt)
  for more clarity and fewer potential name clashes when building
  multiple versions.

wmake/scripts/AllwmakeParseArguments

@@ -32,18 +32,13 @@
 #     . $WM_PROJECT_DIR/wmake/scripts/AllwmakeParseArguments
 #
 #------------------------------------------------------------------------------
-Script=${0##*/}
-
 usage() {
     exec 1>&2
     while [ "$#" -ge 1 ]; do echo "$1"; shift; done
 
     # Print normal usage options
     cat<<USAGE
-
+Executing ${0##*/} is equivalent to
-Usage: $Script [OPTIONS]
-
-Executing $Script is equivalent to
 
    wmake -all [OPTIONS]
 
@@ -53,7 +48,7 @@ With these additional options:
 USAGE
 
     wmake -help
-    exit 1
+    exit 0
 }
 
 
@@ -71,19 +66,18 @@ do
     case "$arg" in
     -h | -help)
         usage
-            exit 0
         ;;
     -fromWmake)
         # If called from wmake (to avoid recursion)
         fromWmake=true
         ;;
     -l | -log)
-            optLog="log.Allwmake"
+        optLog="log.${WM_OPTIONS:-Allwmake}"
         continue    # Permanently remove arg
         ;;
     -log=*)
         optLog="${arg##*=}"
-            [ -n "$optLog" ] || optLog="log.Allwmake"
+        [ -n "$optLog" ] || optLog="log.${WM_OPTIONS:-Allwmake}"
         continue    # Permanently remove arg
         ;;
     -q | -queue)
@@ -131,7 +125,7 @@ fi
 # Cleanup local variables and functions
 #------------------------------------------------------------------------------
 
-unset Script fromWmake optLog optQueue
+unset fromWmake optLog optQueue
 unset -f usage