This directory contains common-use classes, most of which are not specific to GSM. ``` Vector A vector class (NOT std::vector<>) that supports aliased subvectors. Not resizable. BitVector Bit-indexable vectors based on Vector. Interthread A set of C++ wrappers for pthread facilities. Sockets A set of C++ wrappers for Unix sockets. Timeval A C++ wraper for struct timeval. LinkLists Classes for simple linked lists of pointers. Logger A logging interface based on syslogd. Configuration A key-value configuration table. Regexp A C++ wrapper on stdlib regular expressions. ``` Do "make tests" to build a series of unit tests for these classes.