Add some svg files with logos for t-shirts
adding some doc to t-shirt
db2_cnx: adding a plugin for monitoring DB2 connections
db2_cnx: +x
qos_: add ability to use custom update_rate
if1sec_: initial version
if1sec: fixes
if1sec_: adding a proper label
if1sec_: explicit flushing when appending to cache
make main.c grepable easier grepable
refactor code

Added common functions autoconf_check_readable and fail.
Added some TODOs for later completion.
Updated messages from upstream plugins.
fix resource leak in if_err_.c
autoconf should exit with 0 when writing no
Merge remote branch 'helmut/grepable_mainc'
mpb: add threads.c plugin
mpb: forgot to add threads to listplugins
mpb: stop advertising processes.c

The upstream plugin does way more nowadays. This is no longer a drop-in
replacement.
mpb: use full arg to ease code reading
add gitignore
mnc: starting with adding a gitignore