[FS#572] OpenSSL STAMP_CONFIGURED can lead to filename too long

[LEDE Bugs]

The following task has a new comment added:

FS#572 - OpenSSL STAMP_CONFIGURED can lead to filename too long
User who did this - Hannu Nyman (hnyman)

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Or maybe something similar as in:

"rules.mk: make PKG_CONFIG_DEPENDS properly track string values"

https://git.lede-project.org/?p=source.git;a=commitdiff;h=5ef0854b1109ba2dbd1dd3d9f87ce5801002d0ba;hp=d49ddcdfd27ba3d171b856f223712b88d5fc2046

After that commit the hash of the configure options string is added, instead of the cleartext options string. (That is the bc7334694fa4b40acb40d6b11be8a816 in the above example's filename)
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=572#comment2023