patch 8.0.0946: using PATH_MAX does not work well on some systems

Problem:    Using PATH_MAX does not work well on some systems.
Solution:   use MAXPATHL instead. (James McCoy, closes vim#1973)

patch 8.0.0945: 64-bit compiler warnings

Problem:    64-bit compiler warnings.
Solution:   Use "size_t" instead of "int". (Mike Williams)

patch 8.0.0944: test_profile is a little bit flaky

Problem:    Test_profile is a little bit flaky.
Solution:   Accept a match when self and total time are the same. (James
            McCoy, closes vim#1972)

patch 8.0.0943: MS-Windows: Test_terminal_scrape_multibyte may fail

Problem:    Test_terminal_scrape_multibyte fails if the codepage is not utf-8.
Solution:   Start "cmd" with the utf-8 codepage. (micbou, closes vim#1975)

patch 8.0.0942: using freed memory with ":terminal"

Problem:    Using freed memory with ":terminal" if an autocommand changes
            'shell' when splitting the window. (Marius Gedminas)
Solution:   Make a copy of 'shell'. (closes vim#1974)

patch 8.0.0941: existing color schemes don't like StatusLineTerm

Problem:    Existing color schemes don't work well with StatusLineTerm.
Solution:   Don't use "reverse", use fg and bg colors.  Also add
            StatusLineTermNC.

patch 8.0.0940: Test_terminal_scrape_multibyte is flaky

Problem:    Test_terminal_scrape_multibyte is flaky. (James McCoy)
Solution:   Use WaitFor() instead of term_wait().

patch 8.0.0939: Test_terminal_env is flaky

Problem:    Test_terminal_env is flaky. (James McCoy)
Solution:   Use WaitFor() instead of term_wait().

patch 8.0.0938: scrolling in terminal window is inefficient

Problem:    Scrolling in terminal window is inefficient.
Solution:   Use win_del_lines().

patch 8.0.0937: user highlight groups not adjusted for terminal

Problem:    User highlight groups are not adjusted for StatusLineTerm.
Solution:   Combine attributes like for StatusLineNC.