allow lookup of python on system path fix: #18852

fixes #18852
Run disk.inodeusage in posix mode
change pointtopoint to pointopoint also in template (contributes to #18331 )
shlex.split is used with "None" as parameter which makes split wait for stdinput (contributes to #18632)
Performance refactor

salt '*' test.ping...now with 40,000 fewer function calls!
Forgot one import
Revert salt.client.ssh import fix
Moving the call to the parser out of the for loop loop so that it's not re-created for line.
Lint (I hope)
Loading salt.utils no longer does a full import of salt.minion
Lighten the runtime imports in version.py
Fix conflict with merging in reactor changes
Avoid unecessary imports of zmq libraries
Stand-alone zeromq utilities
yaml no longer loaded by salt.utils
Move argspec functions into arg mod. Gate inspect call.
Handle salt.crypt imports
Adjust check function for check not filter table
Fix failing tests
Fix one more failing test