configure.ac: Add the POSIX thread libs to the HP-UX PA configuration.

2006-05-20  Andreas Tobler  <a.tobler@schweiz.ch>
	    John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>

	* configure.ac: Add the POSIX thread libs to the HP-UX PA
	configuration. Add signal specification for HP-UX PA.
	* configure: Rebuilt.
	* configure.host: Add defaults for the HP-UX PA architecture.
	Add descriptor files for HP-UX PA 32-bit and 64-bit.
	* include/hppa-signal.h: New file.
	* include/posix.h: Add shared library suffix for HP-UX.
	* sysdep/pa/descriptor-pa32-hpux.h: New file.
	* sysdep/pa/descriptor-pa64-hpux.h: Likewise.

Co-Authored-By: John David Anglin <dave.anglin@nrc-cnrc.gc.ca>

From-SVN: r113937