Bug #121695: Support account reparenting through drag and drop in the…

… account tree view

Patch by Matt Lavin:
Here is a patch that implements drag and drop reparenting in the accounts page.
The function works for me, and I can't think of anything more that needs to be
done, but I'm new to the Gnucash codebase so a thorough review would be great.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@18426 57a11ea4-9604-0410-9ed3-97b8803252fd

src/gnome-utils/Makefile.am

@@ -82,6 +82,7 @@ libgncmod_gnome_utils_la_SOURCES = \
   gnc-tree-model.c \
   gnc-tree-model-account-types.c \
   gnc-tree-model-account.c \
+  gnc-tree-model-account-drag.c \
   gnc-tree-model-budget.c \
   gnc-tree-model-commodity.c \
   gnc-tree-model-price.c \
@@ -150,6 +151,7 @@ gncinclude_HEADERS = \
   gnc-tree-model.h \
   gnc-tree-model-account-types.h \
   gnc-tree-model-account.h \
+  gnc-tree-model-account-drag.h \
   gnc-tree-model-budget.h \
   gnc-tree-model-commodity.h \
   gnc-tree-model-price.h \