patch 8.0.0885: terminal window scrollback is stored inefficiently

Problem:    Terminal window scrollback is stored inefficiently.
Solution:   Store the text in the Vim buffer.

patch 8.0.0884: can't specify the wait time for term_wait()

Problem:    Can't specify the wait time for term_wait().
Solution:   Add an otional second argument.

patch 8.0.0883: invalid memory access with nonsensical script

Problem:    Invalid memory access with nonsensical script.
Solution:   Check "dstlen" being positive. (Dominique Pelle)

patch 8.0.0882: term_scrape() and term_getline() require two arguments

Problem:    term_scrape() and term_getline() require two arguments but it is
            not enforced.
Solution:   Correct minimal number of arguments. (Hirohito Higashi)  Update
            documentation. (Ken Takata)

patch 8.0.0881: win32.mak no longer included in Windows SDK

Problem:    win32.mak no longer included in Windows SDK.
Solution:   Do not include win32.mak. (Ken Takata)

patch 8.0.0880: Travis uses an old Ubuntu version

Problem:    Travis uses an old Ubuntu version.
Solution:   Switch from precise to trusty. (Ken Takata, closes vim#1897)

patch 8.0.0879: crash when shifting with huge number

Problem:    Crash when shifting with huge number.
Solution:   Check for overflow. (Dominique Pelle, closes vim#1945)

patch 8.0.0878: no completion for :mapclear

Problem:    No completion for :mapclear.
Solution:   Add completion (Nobuhiro Takasaki et al. closes vim#1943)

patch 8.0.0877: using CTRL-\ CTRL-N in terminal is inconsistent

Problem:    Using CTRL-\ CTRL-N in terminal is inconsistent.
Solution:   Stay in Normal mode.

patch 8.0.0876: backslashes and wildcards in backticks don't work

Problem:    MS-Windows: Backslashes and wildcards in backticks don't work.
Solution:   Do not handle backslashes inside backticks in the wrong place.
            (Yasuhiro Matsumoto, closes vim#1942)