Restructure the src directory

It is split into
- /libgnucash (for the non-gui bits)
- /gnucash (for the gui)
- /common (misc source files used by both)
- /bindings (currently only holds python bindings)

This is the first step in restructuring the code. It will need much
more fine tuning later on.

bindings/python/example_scripts/simple_sqlite_create.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+##  @file
+#   @brief Example Script simple sqlite create 
+#   @ingroup python_bindings_examples
+
+from gnucash import Session, Account
+from os.path import abspath
+from gnucash.gnucash_core_c import ACCT_TYPE_ASSET
+
+s = Session('sqlite3://%s' % abspath('test.blob'), is_new=True)
+# this seems to make a difference in more complex cases
+s.save()
+
+book = s.book
+root = book.get_root_account()
+a = Account(book)
+root.append_child(a)
+a.SetName('wow')
+a.SetType(ACCT_TYPE_ASSET)
+
+commod_table = book.get_table()
+a.SetCommodity( commod_table.lookup('CURRENCY', 'CAD') )
+s.save()
+
+s.end()