Update the changelog and el-get-version.

The previous patches are changing the behavior in a user visible way for
recipes.  Update user documentation to reflect the change and upgrade the
minor version number to be able to track this.

el-get-custom.el

@@ -120,14 +120,16 @@ definition provided by `el-get' recipes locally.
 
     Your build recipe, a list.
 
-    A recipe R whose `car' is not a string will be replaced
-    by (eval R).
+    A build command C whose `car' is a symbol (see `symbolp') will be
+    replaced by (eval C).
 
     Then, each element of the recipe will be interpreted as
     a command:
 
-    * If the element is a string, it will be interpreted directly
-      by the shell.
+    * If the element is a list of string, the first element of
+      the list must be the program to call, and each following
+      element a different argument to the call.  No whitespace
+      parsing is done.
 
     * Otherwise, if it is a list, any list sub-elements will be
       recursively \"flattened\" (see `el-get-flatten').  The

el-get.el

@@ -38,6 +38,7 @@
 ;;   - add some tests
 ;;   - deprecate package.el from the old days, only include the Emacs24 one
 ;;   - implement :builtin property (useful for dealing with package.el)
+;;   - fix recipes :build commands, must be either lists of strings or expr
 ;;
 ;;  3.1 - 2011-09-15 - Get a fix
 ;;
@@ -155,7 +156,7 @@
 (defgroup el-get nil "el-get customization group"
   :group 'convenience)
 
-(defconst el-get-version "4.0.2" "el-get version number")
+(defconst el-get-version "4.0.3" "el-get version number")
 
 (defconst el-get-script (or load-file-name buffer-file-name))