2010-06-30  ust 0.5
	* add support for PowerPC 32 architecture
	* use clock_gettime(CLOCK_MONOTINIC) instead of gettimeofday()
	* add several tests
	* output test suite results in TAP format
	* add support for traced library unregistration (useful with dlclose())
	* add manpages
	* compile with -fno-strict-antialiasing
	* add support for channel overwrite and non-collection
	* update tracepoint api from kernel
	* fix various bugs and do various cleanups
	* improve documentation

2010-03-17  ust 0.4
	* remove dependency on libkcompat
	* use atomic ops from liburcu
	* libmallocwrap: rename to libustinstr-malloc
	* libinterfork: rename to libustfork
	* add a testsuite
	* add ustctl --get-subbuf-size and --get-subbuf-num
	* updates for compilation with gcc-4.4
	* remove periodical wakeup in listener thread
	* change benign warnings to debug messages, not to confuse users
	* ustd: fix destruction to free all file descriptors and memory
	* libust: close all file descriptors on close
	* remove periodical wakeup in daemon
	* code cleanups

ust 0.3
	* fix several issues, stabilizing tracing of large applications
	* add --set-subbuf-size / --set-subbuf-num options to ustctl
	* add a signal safe implementation of snprintf

ust 0.2
	* conversion of the buffering system to per-cpu
	* update to the liburcu 0.4 API
	* upgrade to trace format 2.6; the latest lttv may now be used
	* add support for clone() interception in libinterfork
	* port refactorings from the kernel tracer up to 0.173
	* enhancements/refactor of libustcomm
	* add sections in the manual about trace viewing and about tracing apps not linked to libust
	* debugging output is now enabled by adding -DUST_DEBUG to the CFLAGS
	* usttrace: change ustd socket name to ustd-sock-PID
	* change app socket directory name for something more descriptive (/tmp/ust-app-socks)
	* code cleanups
	* various bug fixes