v0.17.2 release

This is mainly a bug fix release, but also includes a new split-logging feature.

Changes v0.17.1 - v0.17.2

• Implement extended information logging (aka split logging)
• switch libtool soname versioning from -version-number to -version-info
• High: loop: fixes resource starvation in mainloop code
• Fix: valgrind "invalid file descriptor" warning
• Fix: Unlink files bound to unix domain sockets
• Fix: resolves compile error for solaris
• Fix alignment issues on hppa
• Fix description of qbutil.h
• Fix comment typo: neccessary -> necessary
• Fix comment typos: incomming -> incoming
• Low: examples: fix race condition in glib mainloop example
• Low: build: update .gitignore for vim swap files and "make check" output
• ipc test improvements.
• Low: check_ipc: generate unique server names for tests
• Low: check_ipc: give connection stress tests for shm and socket unique names
• Low: tests: regression tests for stress testing loop_poll ipc create/destroy
• The udata member of the kevent struct is a void *
• Fixes several warnings under clang:
• Add Doxygen description for qbipc_common.h
• doc: improve README and RPM description
• Clear DOT_FONTNAME, since FreeSans is not included anymore. The new default is Helvetica.
• Remove obsolete options from doxyfiles
• Do not suppress echoing of Doxygen commands