patch 7.4.2129

Problem:    Memory leak when using timer_start(). (Dominique Pelle)
Solution:   Don't copy the callback when using a partial.

patch 7.4.2128

Problem:    Memory leak when saving for undo fails.
Solution:   Free allocated memory. (Hirohito Higashi)

patch 7.4.2127

Problem:    The short form of ":noswapfile" is ":noswap" instead of ":now".
            (Kent Sibilev)
Solution:   Only require three characters.  Add a test for the short forms.

patch 7.4.2126

Problem:    No tests for :diffget and :diffput
Solution:   Add tests.

patch 7.4.2125

Problem:    Compiler warning for loss of data.
Solution:   Add a type cast. (Christian Brabandt)

patch 7.4.2124

Problem:    diffmode test leaves files behind, breaking another test.
Solution:   Delete the files.

patch 7.4.2123

Problem:    No new style test for diff mode.
Solution:   Add a test.  Check that folds are in sync.

patch 7.4.2122

Problem:    Mac: don't get +clipboard in huge build.
Solution:   Move #define down below including featureh.h

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)