pybuilder can't create logfile for install_dependencies under windows

[sdomme]

Normal dependencies can be installed, but not with version number like yamlreader>=3.0.1

(afp-cli) PS C:\IdeaProjects\afp-cli> pyb_ install_dependencies -C
PyBuilder version 0.11.1
Build started at 2015-09-10 11:20:46
------------------------------------------------------------
[INFO]  Building afp-cli version 1.0.4
[INFO]  Executing build in C:\IdeaProjects\afp-cli
[INFO]  Going to execute task install_dependencies
[INFO]  Installing all dependencies
[INFO]  Installing build dependencies
[INFO]  Installing dependency 'coverage'
[INFO]  Installing dependency 'flake8'
[INFO]  Installing dependency 'mock'
[INFO]  Installing dependency 'unittest-xml-reporting'
[INFO]  Installing dependency 'unittest2'
[INFO]  Installing runtime dependencies
[INFO]  Installing dependency 'docopt'
[INFO]  Installing dependency 'requests'
[INFO]  Installing dependency 'yamlreader>=3.0.1'
------------------------------------------------------------
BUILD FAILED - [Errno 22] invalid mode ('w') or filename: 'C:\\IdeaProjects\\afp-cli\\target/logs/install_dependencies\\yamlreader>=3.0.1'
------------------------------------------------------------
Build finished at 2015-09-10 11:20:49
Build took 3 seconds (3054 ms)
(afp-cli) PS C:\IdeaProjects\afp-cli>

[mriehl]

Right, the file name probably needs cleanup.