r21909 - gnucash/branches/2.4/src - Update xml file backend to recognize a newer version file on load attempt, not load, and alert user of need to upgrade Gnucash.

[J. Alex Aycinena]

Author: alex.aycinena
Date: 2012-01-29 00:56:54 -0500 (Sun, 29 Jan 2012)
New Revision: 21909
Trac: http://svn.gnucash.org/trac/changeset/21909

Modified:
   gnucash/branches/2.4/src/backend/xml/gnc-backend-xml.c
   gnucash/branches/2.4/src/backend/xml/gnc-backend-xml.h
   gnucash/branches/2.4/src/backend/xml/io-example-account.c
   gnucash/branches/2.4/src/backend/xml/io-example-account.h
   gnucash/branches/2.4/src/backend/xml/io-gncxml-v1.c
   gnucash/branches/2.4/src/backend/xml/io-gncxml-v2.c
   gnucash/branches/2.4/src/backend/xml/io-gncxml-v2.h
   gnucash/branches/2.4/src/backend/xml/sixtp.c
   gnucash/branches/2.4/src/backend/xml/sixtp.h
   gnucash/branches/2.4/src/backend/xml/test/test-date-converting.c
   gnucash/branches/2.4/src/backend/xml/test/test-dom-converters1.c
   gnucash/branches/2.4/src/backend/xml/test/test-kvp-frames.c
   gnucash/branches/2.4/src/backend/xml/test/test-string-converters.c
   gnucash/branches/2.4/src/backend/xml/test/test-xml-account.c
   gnucash/branches/2.4/src/backend/xml/test/test-xml-commodity.c
   gnucash/branches/2.4/src/backend/xml/test/test-xml-pricedb.c
   gnucash/branches/2.4/src/gnome-utils/gnc-file.c
   gnucash/branches/2.4/src/libqof/qof/qofbackend.h
   gnucash/branches/2.4/src/libqof/qof/qofsession.c
Log:
Update xml file backend to recognize a newer version file on load attempt, not load, and alert user of need to upgrade Gnucash.