[FS#120] opkg fails with Out of memory on a device with 32 MB of RAM

[LEDE Bugs]

The following task has a new comment added:

FS#120 - opkg fails with Out of memory on a device with 32 MB of RAM
User who did this - Martin Tippmann (glycoknob)

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See also https://github.com/lede-project/source/issues/237

A workaround that works for me is setting: 

OPKG_USE_VFORK=1 opkg install ... 
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=120#comment315