patch 7.4.2089

Problem:    Color handling of X11 GUIs is too complicated.
Solution:   Simplify the code.  Use RGBA where appropriate. (Kazunobu
            Kuriyama)

patch 7.4.2088

Problem:    Keymap test fails with normal features.
Solution:   Bail out if the keymap feature is not supported.

patch 7.4.2087

Problem:    Digraph code test coverage is still low.
Solution:   Add more tests. (Christian Brabandt)

patch 7.4.2086

Problem:    Using the system default encoding makes tests unpredictable.
Solution:   Always use utf-8 or latin1 in the new style tests.  Remove setting
            encoding and scriptencoding where it is not needed.

patch 7.4.2085

Problem:    Digraph tests fails on some systems.
Solution:   Run it separately and set 'encoding' early.

patch 7.4.2084

Problem:    New digraph test makes testing hang.
Solution:   Don't set "nocp".

patch 7.4.2083

Problem:    Coverity complains about not restoring a value.
Solution:   Restore the value, although it's not really needed.  Change return
            to jump to cleanup, might leak memory.

patch 7.4.2082

Problem:    Not much test coverage for digraphs.
Solution:   Add a new style digraph test. (Christian Brabandt)

patch 7.4.2081

Problem:    Line numbers in the error list are not always adjusted.
Solution:   Set b_has_qf_entry properly. (Yegappan Lakshmanan)

patch 7.4.2080

Problem:    When using PERROR() on some systems assert_fails() does not see
            the error.
Solution:   Make PERROR() always report the error.