validate SSL certificate hostname (#167).
set_startup_dir(): OS X: set application bundle directory rather than /.
removed includedir from include path in Makefiles.
fixed compilation error with Fink + OS X (Bug #42).
added SOCKS4/5 proxy support.
added -version-info to libtool.
merged plugin-test branch into trunk.
implemented query search and virtual folder (merged from newsearch branch).
match the output header for printing to the message view.
replaced md5.[ch] with public domain code in GNet.
moved mbox.[ch] into libsylph.
moved more modules to libsylph.
moved recv.[ch] to libsylph.
moved html.[ch] to libsylph.
made some core modules library (libsylph).