updated for version 7.4.379
Problem:    Accessing freed memory after using setqflist(list, 'r'). (Lcd)
Solution:   Reset qf_index.
Added tag v7-4-379 for changeset 16cfdf28be40
updated for version 7.4.380
Problem:    Loading python may cause Vim to exit.
Solution:   Avoid loading the "site" module. (Taro Muraoka)
Added tag v7-4-380 for changeset 7cfbad4a78bf