[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)

gen/logger.cpp

@@ -0,0 +1,66 @@
+#include <cassert>
+#include <cstdarg>
+#include <cstdio>
+#include <cstdlib>
+#include <iostream>
+#include <fstream>
+#include <string>
+
+#include "gen/logger.h"
+
+namespace Logger
+{
+    static std::string indent_str;
+    static std::ofstream null_out("/dev/null");
+
+    static bool enabled = false;
+    void indent()
+    {
+        if (enabled)
+        indent_str += "  ";
+    }
+    void undent()
+    {
+        if (enabled) {
+            assert(!indent_str.empty());
+            indent_str.resize(indent_str.size()-2);
+        }
+    }
+    std::ostream& cout()
+    {
+        if (enabled)
+            return std::cout << indent_str;
+        else
+            return null_out;
+    }
+    void println(const char* fmt,...)
+    {
+        if (enabled) {
+            printf(indent_str.c_str());
+            va_list va;
+            va_start(va,fmt);
+            vprintf(fmt,va);
+            va_end(va);
+            printf("\n");
+        }
+    }
+    void print(const char* fmt,...)
+    {
+        if (enabled) {
+            printf(indent_str.c_str());
+            va_list va;
+            va_start(va,fmt);
+            vprintf(fmt,va);
+            va_end(va);
+        }
+    }
+    void enable()
+    {
+        enabled = true;
+    }
+    void disable()
+    {
+        enabled = false;
+    }
+}
+