mdocml default-pager.patch uses 'more -s'; -s option unspported in busybox's more

mdocml is patched[1] to use `/bin/more -s’ (instead of `/usr/bin/more -s’) as the default (man) pager, as /bin/more is provided by busybox.

however, busybox’s more implementation does not support -s, and fails with return code 141 (without opening the file):

$ man man; echo $?
more: -s: No such file or directory
141

There are a few options to fix:

change default-pager.patch to remove -s and use `/bin/more’
change default-pager.patch to use the busybox provided `/usr/bin/less’
set $MANPAGER
set $PAGER

I personally prefer (2), because it provides the most functionality (less is more) and is of equal complexity to (1). It’s also in line with the previous patch[2] which avoided setting $MANPAGER/PAGER.

[1] http://git.alpinelinux.org/cgit/aports/tree/main/mdocml/default-pager.patch
[2] http://git.alpinelinux.org/cgit/aports/commit/main/mdocml/APKBUILD?id=f74021abf32618202b26660a7412e170b95f12ac

(from redmine: issue id 5190, created on 2016-02-25)

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