scripts: convert gdb script to python

gives more power and is more maintainable

scripts/loader.gdb

-set confirm off
-add-symbol-file /usr/lib/jvm/java-1.7.0-openjdk.x86_64/jre/lib/amd64/server/libjvm.so 0x100000195410
-set confirm on
-define connect
-  target remote :1234
-end

scripts/loader.py

+#!/usr/bin/python
+
+import gdb
+
+gdb.execute('add-symbol-file /usr/lib/jvm/java-1.7.0-openjdk.x86_64/jre/lib/amd64/server/libjvm.so 0x100000195410')
+
+class Connect(gdb.Command):
+    '''Connect to a local kvm instance at port :1234'''
+    def __init__(self):
+        gdb.Command.__init__(self,
+                             'connect',
+                             gdb.COMMAND_NONE,
+                             gdb.COMPLETE_NONE)
+    def invoke(self, arg, from_tty):
+        gdb.execute('target remote :1234')
+
+Connect()