GIT 1.2.6

A couple more fixes since 1.2.5

1. 08337a9 copy_fd: close ifd on error by Sam Ravnborg · 20 years ago
2. 1c15afb xread/xwrite: do not worry about EINTR at calling sites. by Junio C Hamano · 20 years ago
3. e6c64fc copy.c::copy_fd() - do not leak file descriptor on error return. by Junio C Hamano · 20 years ago
4. f3123c4 pack-objects: Allow use of pre-generated pack. by Junio C Hamano · 20 years ago