danielschickmunit

make deditec_relais8 thread safe

2

**Description** Fixes Bug, when using the deditec_relais_8 in parallel it would crash with `USB Resource Busy` this is fixed by creating a lock file and checking when getting and setting...

path too long error fix

5

Fixes #948 changes the names for the temporary file_paths from `labgrid-ssh-tmp-` to `lg-ssh-` and `labgrid-connection-` to `lg-con-` in order to be compatible with MacOS and its longer tempdir-path

if running `labgrid-client` nativly on MacOS the ssh-connection to the exporter will fail due to an error called `too long for Unix domain socket` I'll link a pull-request

**Describe the bug** the clock-speed that is shown in the upper right corner is the "apparent" or "should-be" (apparently from `/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_cur_freq`) - value but in fact the pi I am...