patches for turning tapsets wrt kernel configuration available

[Victor Kamensky <kamensky at cisco dot com>]

Hi Guys,

Question, do you guys open to accepting patches that would turn available
tapset wrt available kernel configuration.

Here is an example of a problem that I've run into on some of our
machines. Probe 'probe nd_syscall.*' failed as follows:

semantic error: while resolving probe point: identifier 'kprobe' at 
/nobackup/kamensky/20180731/binos/linkfarm/sysroot-x86_64_cge7/usr/share/systemtap/tapset/linux/sysc_mq_open.stp:80:30
        source: probe __nd_syscall.mq_open = 
kprobe.function("sys_mq_open")

it turns out my kernel does not enable CONFIG_POSIX_MQUEUE so sys_mq_open
function does not exist in kernel. Fix is obvious: to add proper
'%( CONFIG_POSIX_MQUEUE == "[ym]" %?' in tapset/linux/sysc_mq_open.stp.
But I wonder whether you guys would accept changes like this. Just wanted
to check before I spend time on making clean patch. I suspect there are
more issues like this, which may not be visible on regular distros like
RedHat and Fedora where system running big fully configured kernel.

Thanks,
Victor