bug#30862: 25.3; Need variant of `make-process' that uses file name handlers

[Philipp]

Most fundamental process-related functions (call-process, start-process)
have variants that take file name handlers into account, except
make-process.  Since make-process is more powerful than start-process,
it should also have a variant that honors file name handlers.  For
example, it could accept another keyword argument ‘:file-handlers’
which, if non-nil, would invoke file name handlers based on
‘default-directory’.



In GNU Emacs 25.3.1 (x86_64-apple-darwin16.7.0, NS appkit-1504.83 Version 
10.12.6 (Build 16G29))
 of 2017-09-15 built on p
Windowing system distributor 'Apple', version 10.3.1561
Configured using:
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