Limit file/path name length in Windows.
Limit file/path name length in Windows.

Fixes #1548

Ventero/greasemonkey,the8472/greasemonkey,Ventero/greasemonkey,the8472/greasemonkey,HasClass0/greasemonkey,HasClass0/greasemonkey,Martii/greasemonkey,Martii/greasemonkey