Long lines
Typos
Fix shell/get-git-id in case the current HEAD is not a known tag.
Only sync HTTP backends with a given list of files/dir. This should fix #552
Add time from start in log statement (useful to profile)

Also, do not flush after each log statement (this might be slow)
Always display some debug information when linking & removing files
Fix debug header in OpamCudf
Fix indentation
Do not open Unix
Add OpamFilename.ends_with
Add a newline after the HTTP return code when --verbose
Add a Graph module to represent repository graphs
Allow -j for 'opam update'
Fix tests/Makefile to not use 'opam upload' anymore
[solver] improve the performance of the minimality checker
Add package and compiler repository state
Add repo/index.packages and repo/index.compilers file scpecs
On update, also create repo/updated.compilers
Store the file checksums in the compiler and package states
No more ~/.opam/repo/<name>/updated file. This will be computed automatically by OPAM.