Bug 786708 - GnuCash won't load currency fractions larger than 1000000.

Also create larger fractions for the account dialog.

libgnucash/engine/Account.cpp

@@ -687,7 +687,7 @@ gnc_account_class_init (AccountClass *klass)
                        "1 USD can be divided into 100 cents.",
                        0,
                        G_MAXINT32,
-                       1000000,
+                       GNC_COMMODITY_MAX_FRACTION,
                        static_cast<GParamFlags>(G_PARAM_READWRITE)));
 
     g_object_class_install_property

libgnucash/engine/Split.c

@@ -1111,7 +1111,7 @@ get_currency_denom(const Split * s)
     }
     else if (!s->parent || !s->parent->common_currency)
     {
-        return 1000000; /* Max supported denom to avoid premature rounding. */
+        return GNC_COMMODITY_MAX_FRACTION;
     }
     else
     {
@@ -1128,7 +1128,7 @@ get_commodity_denom(const Split * s)
     }
     else if (!s->acc)
     {
-        return 1000000; /* Max supported denom to avoid premature rounding. */
+        return GNC_COMMODITY_MAX_FRACTION;
     }
     else
     {

libgnucash/engine/gnc-commodity.c

@@ -842,7 +842,7 @@ gnc_commodity_class_init(struct _GncCommodityClass* klass)
                                             "The fraction is the number of sub-units that "
                                             "the basic commodity can be divided into.",
                                             1,
-                                            1000000,
+                                            GNC_COMMODITY_MAX_FRACTION,
                                             1,
                                             G_PARAM_READWRITE));
     g_object_class_install_property(gobject_class,

libgnucash/engine/gnc-commodity.h

@@ -115,6 +115,11 @@ GType gnc_commodity_namespace_get_type(void);
    when presenting the currency related namespace to the user */
 #define GNC_COMMODITY_NS_ISO_GUI N_("Currencies")
 
+/** Max fraction is 10^9 because 10^10 would require changing it to an
+ * int64_t.
+ */
+#define GNC_COMMODITY_MAX_FRACTION 1000000000
+
 typedef GList CommodityList;
 
 /** @name Commodity Quote Source functions