[svn r90] Major updates to the gen directory. Redesigned the 'elem' struct. Much more... !!!

Lots of bugfixes.
Added support for special foreach on strings.
Added std.array, std.utf, std.ctype and std.uni to phobos.
Changed all the .c files in the gen dir to .cpp (it *is* C++ after all)

lphobos/std/array.d

@@ -0,0 +1,38 @@
+
+module std.array;
+
+private import std.c.stdio;
+
+class ArrayBoundsError : Error
+{
+  private:
+
+    uint linnum;
+    char[] filename;
+
+  public:
+    this(char[] filename, uint linnum)
+    {
+	this.linnum = linnum;
+	this.filename = filename;
+
+	char[] buffer = new char[19 + filename.length + linnum.sizeof * 3 + 1];
+	int len;
+	len = sprintf(buffer.ptr, "ArrayBoundsError %.*s(%u)", filename, linnum);
+	super(buffer[0..len]);
+    }
+}
+
+
+/********************************************
+ * Called by the compiler generated module assert function.
+ * Builds an ArrayBoundsError exception and throws it.
+ */
+
+extern (C) static void _d_array_bounds(char[] filename, uint line)
+{
+    //printf("_d_assert(%s, %d)\n", (char *)filename, line);
+    ArrayBoundsError a = new ArrayBoundsError(filename, line);
+    //printf("assertion %p created\n", a);
+    throw a;
+}