port-amd64/49359: x86 bootloader ignores boot flags if boot.cfg is present

[jmcneill%invisible.ca@localhost]

>Number:         49359
>Category:       port-amd64
>Synopsis:       x86 bootloader ignores boot flags if boot.cfg is present
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    port-amd64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Nov 04 12:40:00 +0000 2014
>Originator:     Jared McNeill
>Release:        7.0_BETA
>Organization:
>Environment:
amd64 7.0_BETA and 7.99.1
>Description:
With both 7.0_BETA and -current boot loaders, "boot -s", "boot -c", etc are ignored from the boot prompt. The loader always seems to execute the first menu command if boot.cfg is present.
>How-To-Repeat:
Interrupt boot process. Drop to prompt. "boot -s" and note that you didn't actually boot single-user.
>Fix: