Log Message:
Update to 0.11.21. Fixes build with go-1.5.

Carry over patch from previous pkgsrc version, even though it only
changes a config default value (without adapting the docs).

Changes:
v0.11.21

    Recover from 'corrupted or incomplete CURRENT file' etc (#2017, @calmh)
    Retain standard streams over restart (#2155, @calmh)
    Add unit test for staggered versioning (#2165, @Zillode)
    Newest first should be different from oldest first (#2161, @calmh)
    Fix time zone error in staggered versioning (#2165, @alex2108)

v0.11.20

    Rename 'delete' to 'remove' (#1007, @Zillode)
    Fix editing device address (#2129, @calmh)
    Use grid instead of three-column (#2130, @calmh)
    Stop folder when running out of disk space (#2057, @Zillode)
    Remove double slashes in directives (#2143, @uok)
    Change to Font Awesome icon font (#2138, @uok)

v0.11.19

    Properly rename config files during integration tests (#1769, @Zillode)
    Add timeout for peek (#1035, @AudriusButkevicius)
    Handle multiple case insensitivity prefixes in ignores (#2134, @calmh)

v0.11.18

    Update credits for dependencies (#2082, @Zillode)
    Use protocol provided buffers for requests (#1157, @AudriusButkevicius)

v0.11.17

    Determine conflict winner based on change type and modification time (#1848, \ 
@calmh)
    Optionally ignore remote deletes (#1254, @calmh)
    Add devices without restart (#2083, @calmh)
    Add folders without restart (#2063, @calmh)

v0.11.16

    Allow #editIgnores to scroll in browser (#2041, @canton7)
    Don't let folder ID escape into HTML tag ID:s (#2059, @calmh)
    Improve info text for device addresses (#2044, @uok)

v0.11.15

    v0.11.14 doesn't correctly save its config on Windows. This fixes that. \ 
Woops. :confused:
    Revert "Merge pull request #2053 from calmh/atomicwriter" (#2058, \ 
@calmh)