patch 8.0.1806: InsertCharPre causes problems for autocomplete

Problem:    InsertCharPre causes problems for autocomplete. (Lifepillar)
Solution:   Check for InsertCharPre before calling vpeekc(). (Christian
            Brabandt, closes vim#2876)

patch 8.0.1805: qf_parse_line() is too long

Problem:    qf_parse_line() is too long.
Solution:   Split it in parts.  Properly handle vim_realloc() failing.
            (Yegappan Lakshmanan, closes vim#2881)

patch 8.0.1804: using :normal in terminal window causes problems

Problem:    Using :normal in terminal window causes problems. (Dominique
            Pelle)
Solution:   Don't call terminal_loop() for :normal. (closes vim#2886)

patch 8.0.1803: warning for uninitialized variable

Problem:    Warning for uninitialized variable. (Tony Mechelynck)
Solution:   Initialize it.

patch 8.0.1802: MS-Windows: terminal test fails

Problem:    MS-Windows: terminal test fails.
Solution:   Close redirected output file earlier.

patch 8.0.1801: MS-Windows: redirecting terminal output does not work

Problem:    MS-Windows: redirecting terminal output does not work.
Solution:   Intercept the text written to the terminal and write it to the
            file.

patch 8.0.1800: X11: getting color is slow

Problem:    X11: getting color is slow.
Solution:   Avoid using sprintf() and XParseColor(), put the RGB values in
            XColor directly.

patch 8.0.1799: no test for :registers command

Problem:    No test for :registers command.
Solution:   Add a test. (Dominique Pelle, closes vim#2880)

patch 8.0.1798: MS-Windows: file considered read-only too often

Problem:    MS-Windows: file considered read-only when another program has
            opened it.
Solution:   Pass file sharing flag to CreateFile(). (Linwei, closes vim#2860)

patch 8.0.1797: terminal window is redrawn too often

Problem:    Terminal window is redrawn too often and scrolling is repeated.
Solution:   Don't scroll immediately but only when redrawing.  Avoid redrawing
            the whole terminal window on every change.