create_installer: Fix warnings reported by pylint

 W: 50,0: Unused import urllib
 W: 51,0: Unused import OptionValueError
 W: 54,0: Wildcard import threadedwork
 W:344,4:parse_cmd_line: Using global for 'NO_REMOTE_BACKEND' but no assignment is done
 W:454,4:init_data: Using global for 'CONFIG_DIR' but no assignment is done
 W:473,4:init_data: Redefining name 'CONFIG_DIR_DST' from outer scope (line 72)
 W:473,4:init_data: Unused variable 'CONFIG_DIR_DST'
 C:473,4:init_data: Invalid name "CONFIG_DIR_DST" for type variable (should match [a-z_][a-z0-9_]{2,30}$)
 C:925,8:install_ifw_tools: Operator not preceded by a space
        options=IfwOptions(INSTALLER_FRAMEWORK_QT_ARCHIVE_URI,
               ^
                           INSTALLER_FRAMEWORK_QT_CONFIGURE_OPTIONS,
                           INSTALLER_FRAMEWORK_URL,
                           INSTALLER_FRAMEWORK_BRANCH,
                           INSTALLER_FRAMEWORK_QMAKE_ARGS,
                           INSTALLER_FRAMEWORK_PRODUCT_KEY_CHECKER_URL,
                           INSTALLER_FRAMEWORK_PRODUCT_KEY_CHECKER_BRANCH,
                           INSTALLER_FRAMEWORK_OPENSSL

Change-Id: Id4da238db83791a261ef0c4b322db139a4b16442
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>
bld_qtcreator: Fix some warnings reported by pylint

 W: 50,0: Unused import stat
 W: 55,0: Wildcard import threadedwork
 W: 56,0: Wildcard import bld_utils
 W: 59,49:createDownloadExtract7zTask: Redefining name 'tempPath' from outer scope (line 143)
 W: 59,59:createDownloadExtract7zTask: Redefining name 'callerArguments' from outer scope (line 128)
 W: 59,37:createDownloadExtract7zTask: Redefining name 'targetPath' from outer scope (line 182)

Change-Id: Ibb6eb03bd6cfff6eb52b2331c43d51c37225b6fd
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>
bld_ifw_tools: Fix warnings reported by pylint

 R: 75,0:IfwOptions: Too many instance attributes (24/7)
 W:184,4:setup_argument_parser: Redefining name 'parser' from outer scope (line 469)
 W:202,14:build_ifw: Redefining name 'options' from outer scope (line 473)
 W:233,23:prepare_qt_sources: Redefining name 'options' from outer scope (line 473)
 W:267,13:build_qt: Redefining name 'options' from outer scope (line 473)
 C:277,4:build_qt: Comma not followed by a space
    configure_options = re.sub(' +',' ', options.qt_configure_options)
                                   ^^
 W:291,32:prepare_installer_framework: Redefining name 'options' from outer scope (line 473)
 W:308,32:prepare_product_key_checker: Redefining name 'options' from outer scope (line 473)
 W:327,30:build_installer_framework: Redefining name 'options' from outer scope (line 473)
 W:352,28:clean_build_environment: Redefining name 'options' from outer scope (line 473)
 W:379,32:archive_installer_framework: Redefining name 'options' from outer scope (line 473)
 W:387,14:archive_installer_framework: Unused variable 'dirs'
 W:399,26:archive_installerbase: Redefining name 'options' from outer scope (line 473)
 C:421,8:archive_installerbase: Comma not followed by a space
        cmd_args_clean = ['rmdir' ,'/q/s', bin_temp]
                                  ^^
 W:433,16:archive_nib: Redefining name 'options' from outer scope (line 473)
 W:451,24:archive_macdeployqt: Redefining name 'options' from outer scope (line 473)
 C:473,4: Operator not preceded by a space
    options=IfwOptions(caller_arguments.qt_archive_uri,
           ^
                       caller_arguments.qt_configure_options,
                       caller_arguments.ifw_url,
                       caller_arguments.ifw_branch,
                       caller_arguments.ifw_qmake_args,
                       caller_arguments.product_key_checker_url,
                       caller_arguments.product_key_checker_branch,
                       caller_arguments.openssl_dir
 C:469,4: Invalid name "parser" for type constant (should match (([A-Z_][A-Z0-9_]*)|(__.*__))$)
 C:471,4: Invalid name "caller_arguments" for type constant (should match (([A-Z_][A-Z0-9_]*)|(__.*__))$)
 C:473,4: Invalid name "options" for type constant (should match (([A-Z_][A-Z0-9_]*)|(__.*__))$)

Change-Id: I0ae2e360008b397f5667a745f1734336e191455f
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>