The test case I am using here is a bit large but I could not yet find a way to make it smaller. If someone knows a smaller test case, please let me know. naddy caught a small bug in the new test code I had written, thanks!

Simplify dial_git() by formatting the initial Git protocol packet with dprintf, suggested by millert, and stop leaking an asprintf buffer. ok stsp

This catches invalid reference names passed to 'got ref -l' and will also be needed to validate reference names passed to a future 'gotadmin pack' command. ok naddy@

This will eventually be used by 'gotadmin pack'. Checksum init and finalization will need to be done by the caller since many objects will be written out in compressed form while we are computing checksums across the entire pack file. ok millert, naddy

Code which inserts a reference into a reflist passes ownership of this reference to the list. However, got_ref_list_free() never closed such references, which resulted in a memory leak. ok tracey

Avoids an error where tog(1) would exit with "poll: Interrupted system call" while the terminal window was being resized. ok millert

Patch by Nam Nguyen