Fix linking gallium drivers and with dricore after defadf2b1

Fix linking gallium drivers and with dricore after defadf2b1

Commit defadf2b1 erroneously tries to make gallium drivers link with libdricore
as a static library, not a shared library

Also, change uses of DRI_LIB_DEPS in gallium driver Makefiles to
GALLIUM_DRI_LIB_DEPS, so the libraries added are used in the linking the gallium
driver

Also, fix the path to the libdricore.so symlink, it's made in LIB_DIR, not in
the libdricore directory

Also repair quoting of dricore settings of DRI_LIB_DEPS and GALLIUM_DRI_LIB_DEPS
variables so VERSION is interpolated in configure but TOP and LIB_DIR are
interpolated later (where they are known, but VERSION isn't)

Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Signed-off-by: Tom Stellard <thomas.stellard@amd.com>