Move all the things (YES. Move them.)

Also, implemented some basic modlist logic, to be wired up.

depends/patchlib/bspatch.h

@@ -0,0 +1,27 @@
+#ifndef _BSPATCH_H
+#define _BSPATCH_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum BSPatchError
+{
+	ERR_CORRUPT_PATCH,
+	ERR_OTHER,
+	ERR_NONE,
+};
+
+/**
+ * patch oldfile by using patchfile and write the output to newfile.
+ *
+ * Returns ERR_NONE if successful
+ */
+int bspatch(const char * oldfile, const char * newfile, const char * patchfile);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif