Log Message:
Update to 2.6.8:

2.6.8 - 27 September 2015
Announcement: GnuCash 2.6.8 Release 2015-09-27
GnuCash 2.6.8 released

The GnuCash development team proudly announces GnuCash 2.6.8, the
eighth maintenance release in the 2.6-stable series.

The following bugs are fixed:

     Bug 724738 - Value in "Display Symbol" field not saved.
     Bug 746998 - "Months Remaining" spinbox in Loan Assistant is
         non-obvious. Provide a tool tip explaining what it's for.
     Bug 747795 - Attached file not found. MSWin only. \ 
ShellExecuteW("open")
         doesn't decode http escapes on file: IRIs.
     Bug 749077 - wrongfully invalidating any account save
         location/path starting with ".gnucash"
     Bug 752035 - Transaction Report "Filter By" Not Always Working.
     Bug 752204 - .gml2 files are modified during build. Since there's
         no real benefit to saving the files most of the time, don't,
         but leave the save line in, commented out, to make it easy to
         write new files if necessary.
     Bug 752879 - Finance::Quote TZ Date::Manip config variable is
         deprecated.
     Bug 753146 - free(): invalid pointer on duplicate transaction
         when Use Split Action Field for Number is set.
     Bug 754617 - Gnucash should use PKG_PROG_PKG_CONFIG
     Bug 754764 Budget Doxygen documentation - gnc-budget-view.c.

Other repairs that weren't marked as bugs in git:
     Clean up deprecated Gtk functions to make eventual migration to
     Gtk3 easier.

     Improve storage of prices in the price db so that there is only
     one per day and a preference list determines what sources can
     overwrite existing prices. Prices are stored in the direction
     that the price is greater than one to preserve precision for
     large prices that would be small in the other direction.

     Correct the Stock, Bond, Market Index, and Mutual Fund account
     types to ASSET in the template accounts.  STOCK and MUTUAL are
     not compatible with currency.

     Clean up some non-fatal asserts.

     Developer documentation improvements.

     Fix backend Sync errors not being reported.

     Restore Date::Manip as an explicit dependency in gnc-fq-update;
     it's required for gnc-fq-helper, not Finance::Quote.

Updated Translations:
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