Log Message:
Update liboauth from 0.8.9 to 0.9.4.

Changes since previous version:

	version 0.9.4
	  - fixed possible memory corrution in oauth_curl_get
		  thanks to Bruce Rosen for reporting this issue

	version 0.9.3
	 - yet more build-system fixes:
	   - allow to override HASH_LIBS and CURL_LIBS using envoronment variables
	   - include them in .pc and tests/Makefile.am

	version 0.9.2
	 - fixed typo in build-system (LDFLAGS, -Wl,--as-needed detection)

	version 0.9.1
	 - fixed typo in API:
	   oauth_time_indepenent_equals[_n] is now deprecated in favor of
		 oauth_time_independent_equals[_n]
	 - added check for 'Wl,--as-needed' linker flag.

	version 0.9.0
	 - fixed typo in pkg-config file.

With thanks to Brad Harder for the nudge.