Problem:    When compiling Vim for MSYS2 (linked with msys-2.0.dll), the Win32
            clipboard is not enabled.
Solution:   Recognize MSYS like CYGWIN. (Ken Takata)

Problem:    Using ":sort" on a very big file sometimes causes text to be
            corrupted. (John Beckett)
Solution:   Copy the line into a buffer before calling ml_append().

Problem:    When using :diffsplit the cursor jumps to the first line.
Solution:   Put the cursor on the line related to where the cursor was before
            the split.

Problem:    When pasting on the command line line breaks result in literal
            <CR> characters. This makes pasting a long file name difficult.
Solution:   Skip the characters.

Problem:    Memory leak when there is an error in setting an option.
Solution:   Free the saved value (Christian Brabandt)

Problem:    The asin() function can't be used.
Solution:   Sort the function table properly. (Watiko)

Problem:    Rare crash in getvcol(). (Timo Mihaljov)
Solution:   Check for the buffer being NULL in init_preedit_start_col.
            (Hirohito Higashi, Christian Brabandt)

Problem:    Compiler warnings on Windowx x64 build.
Solution:   Add type casts. (Mike Williams)

Problem:    test86 and test87 are flaky in Appveyor.
Solution:   Reduce the count from 8 to 7. (suggested by ZyX)

Problem:    Cross compilation on MS-windows doesn't work well.
Solution:   Tidy up cross compilation across architectures with Visual Studio.
            (Mike Williams)