More progress on build scripts

Created a config directory for configuration files.
Moved all absolute path variables to a projpaths.py file
All scripts can now universally learn absolute paths via projpaths.py
Moved the config_symbols class to the configuration.py file.
Moved libs to loader since they are only referred by the loader

loader/libs/c/src/snprintf.c

@@ -0,0 +1,20 @@
+/*
+Author: Ben Leslie <benjl@cse.unsw.edu.au>
+*/
+
+#include <stdio.h>
+#include "format.h"
+
+#include <assert.h>
+
+int
+snprintf(char *s, size_t size, const char *format, ...)
+{
+	int ret;
+	va_list ap;
+	
+	va_start(ap, format);
+	ret = vsnprintf(s, size, format, ap);
+	va_end(ap);
+	return ret;
+}