Add skipCurrentEntryData
Merge branch 'master' of https://github.com/renenglish/pecl-file_formats-archive

Conflicts:
	archive_clbk.c
1. fix bug: Use long type instread of int on calling zend_parse_parameter
2. fix bug: Set seek/skip only when open a read stream
Fix tests: Remove test about ArchiveReader(".") for 2 reasons:
1. It does not throw out an exception in my test(with php5.2.5)
2. It would be trapped into a infinite loop because of a bug of PHP(fixed in PHP5.5.12)
remove unused comments