(a) Fixed a variety of tiny bugs
(b) Changed "interesting path string" (i.e., interesting filename) to be an input parameter of the script, with the appropriate defaults
(c) Small feature improvements: print out only the short filename in microops
(d) Implemented chdir()
(e) Implemented openat(), a passing-through O_DIRECTORY opens
(f) First version of README.md, and created alc-strace/test/ with the git workload

Squashed commit of the following:

commit 998dbc04e6b64659529177ea30dccb30d368d354
Author: root <root@madlap.madnet>
Date:   Sun Jan 5 16:07:15 2014 -0600

    tmp

commit 493b9cf8a07bdcf458d929fb1cdbad65354e41ce
Author: root <root@madlap.madnet>
Date:   Sun Jan 5 14:40:54 2014 -0600

    tmp

commit e5918060939f7e9b8e1b6405cda96707269e0031
Author: root <root@me>
Date:   Sun Jan 5 13:45:48 2014 -0600

    tmp