Hardcoded path on Windows

[neroux]

Similar to #253 and #260, I also did not manage to properly use the software on Windows.

Partly, that was because of hardcoded paths

pickle/src/Package/PHP/Command/Build/Windows.php

Lines 48 to 51 in 17d5917

	if (!file_exists('c:\\php-sdk\\bin')) {
	throw new Exception('PHP SDK not found');
	}
	putenv('path=c:\\php-sdk\\bin;' . getenv('path'));