Install gprofng libraries under $(pkglibdir)

Install gprofng libraries under $(pkglibdir)

gprofng/ChangeLog
2022-03-21  Vladimir Mezentsev  <vladimir.mezentsev@oracle.com>

        PR gprofng/28972
	* gprofng/libcollector/Makefile.am: Rename lib_LTLIBRARIES to
	pkglib_LTLIBRARIES. Add install-data-local.
	* gprofng/src/Makefile.am: Likewise.
	* gprofng/src/envsets.cc (putenv_libcollector_ld_misc): New location of
	the gprofng libraries.
	* gprofng/configure.ac: Removed an unused GPROFNG_LIBDIR.
	* gprofng/Makefile.am: Removed an unused GPROFNG_LIBDIR.  Add
	install-data-local.
	* gprofng/configure: Regenerate.
	* gprofng/Makefile.in: Likewise.
	* gprofng/doc/Makefile.in: Likewise.
	* gprofng/gp-display-htmllibcollector/Makefile.in: Likewise.
	* gprofng/libcollector/Makefile.in: Likewise.
	* gprofng/src/Makefile.in: Likewise.