[Vm-dev] [OpenSmalltalk/opensmalltalk-vm] 21462 open a file stream based on fd or file (#222)

[akgrant43]

Extend FilePlugin to allow a file to be opened using either the file
descriptor (fd) or FILE* in Pharo.
    
Original PR: https://github.com/pharo-project/pharo-vm/pull/108
Updated PR: https://github.com/pharo-project/pharo-vm/pull/142
    
(both superseeded)
    
As a (redundant) example of how this can be used, to open stderr (fd=2)
for writing:
    
    | stderr |
    
    stderr := BinaryFileStream handle: (FilePluginPrims new
        openFileDescriptor: 2 writable: true)
            file: (File named: 'fd2')
            forWrite: true
    
    stderr nextPutAll: 'Hello World'; lf.

You can view, comment on, or merge this pull request online at:

  https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/222

-- Commit Summary --

  * 21462-Open a FileStream based on fd or FILE*
  * 21462-Open-a-FileStream-based-on-fd-or-FILE

-- File Changes --

    M platforms/Cross/plugins/FilePlugin/FilePlugin.h (5)
    M platforms/Cross/plugins/FilePlugin/sqFilePluginBasicPrims.c (35)
    M src/plugins/FilePlugin/FilePlugin.c (153)

-- Patch Links --

https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/222.patch
https://github.com/OpenSmalltalk/opensmalltalk-vm/pull/222.diff

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