[cmd] Override --config file options from command line

[csordasmarton]

With this change options specified on the command line after the --config option
will override options specified in the config file.

[bruntib]

Do I understand correctly that the order of command line arguments (including --config) still matters? So if some config options are written before --config flag, then the options in the given config file have priority?

[csordasmarton]

@bruntib You are right.

Let's assume we have the following config file:

{
  'analyzer': ['-j10']
}

The following scenarios are possible:

# The options in the config file will be stronger. So the number of threads will be 10.
CodeChecker analyze -j4 --config myconfig.txt

# The option in the command line will override the option in the config file. So the number of threads will be 4.
CodeChecker analyze --config myconfig.txt -j4

[gyorb]

Here is an overview of what got changed by this pull request:

Complexity increasing per file
==============================
- bin/CodeChecker.py  1
         

See the complete overview on Codacy