Implement version information storage and retrieval for the bootrom and the osimage.

Use perl to create the version information (thereby re-creating the perl dependency and adding an svn dependency) but fall back in case of missing perl or svn

common/default_version.c

@@ -0,0 +1,9 @@
+#include <proxmark3.h>
+/* This is the default version.c file that Makefile.common falls back to if perl is not available */
+struct version_information __attribute__((section(".version_information"))) version_information = { 
+		VERSION_INFORMATION_MAGIC, 
+		1, /* version version 1 */
+		0, /* version information not present */
+		2, /* cleanliness couldn't be determined */
+		/* Remaining fields: zero */
+};