patch 7.4.2121

Problem:    No easy way to check if lambda and closure are supported.
Solution:   Add the +lambda feature.

patch 7.4.2120

Problem:    User defined functions can't be a closure.
Solution:   Add the "closure" argument. Allow using :unlet on a bound
            variable. (Yasuhiro Matsumoto, Ken Takata)

patch 7.4.2119

Problem:    Closures are not supported.
Solution:   Capture variables in lambdas from the outer scope. (Yasuhiro
            Matsumoto, Ken Takata)

patch 7.4.2118

Problem:    Mac: can't build with tiny features.
Solution:   Don't define FEAT_CLIPBOARD unconditionally. (Kazunobu Kuriyama)

patch 7.4.2117

Problem:    Deleting an augroup that still has autocmds does not give a
            warning.  The next defined augroup takes its place.
Solution:   Give a warning and prevent the index being used for another group
            name.

patch 7.4.2116

Problem:    The default vimrc for Windows is very conservative.
Solution:   Use the defaults.vim in the Windows installer.

patch 7.4.2115

Problem:    Loading defaults.vim with -C argument.
Solution:   Don't load the defaults script with -C argument.  Test sourcing
            the defaults script.  Set 'display' to "truncate".

patch 7.4.2114

Problem:    Tiny build fails.
Solution:   Always include vim_time().

patch 7.4.2113

Problem:    Test for undo is flaky.
Solution:   Turn it into a new style test.  Use test_settime() to avoid
            flakyness.

patch 7.4.2112

Problem:    getcompletion(.., 'dir') returns a match with trailing "*" when
            there are no matches. (Chdiza)
Solution:   Return an empty list when there are no matches.  Add a trailing
            slash to directories. (Yegappan Lakshmanan)  Add tests for no
            matches. (closes vim#947)