rename from libsoup to libsoup-2.4 (TARGET_DIR): don't need to override

rename from libsoup to libsoup-2.4 (TARGET_DIR): don't need to override

	* docs/reference/Makefile.am (DOC_MODULE): rename from libsoup to
	libsoup-2.4
	(TARGET_DIR): don't need to override this now

	* docs/reference/libsoup-2.4.types:
	* docs/reference/libsoup-2.4-docs.txt:
	* docs/reference/libsoup-2.4-overrides.txt:
	* docs/reference/libsoup-2.4-sections.txt: Rename these from
	unversioned, to match DOC_MODULE

	Fixes doc installation to work with devhelp again. #518384, Mart
	Raudsepp.

svn path=/trunk/; revision=1095