configure.in: add --disable-libuuid option

Add an option to switch between the private (in-tree) libuuid and
public (in-system installed) library.  The private version is still
enabled by default.

Signed-off-by: Scott James Remnant <scott@netsplit.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/MCONFIG.in b/MCONFIG.in
index 7f3e0c5..cec3631 100644
--- a/MCONFIG.in
+++ b/MCONFIG.in
@@ -74,30 +74,30 @@
 LIBCOM_ERR = $(LIB)/libcom_err@LIB_EXT@ @PRIVATE_LIBS_CMT@ @SEM_INIT_LIB@
 LIBE2P = $(LIB)/libe2p@LIB_EXT@
 LIBEXT2FS = $(LIB)/libext2fs@LIB_EXT@
-LIBUUID = $(LIB)/libuuid@LIB_EXT@ @SOCKET_LIB@
+LIBUUID = @LIBUUID@ @SOCKET_LIB@
 LIBBLKID = @LIBBLKID@ @PRIVATE_LIBS_CMT@ $(LIBUUID)
 LIBINTL = @LIBINTL@
 DEPLIBSS = $(LIB)/libss@LIB_EXT@
-DEPLIBUUID = $(LIB)/libuuid@LIB_EXT@
+DEPLIBUUID = @DEPLIBUUID@
 DEPLIBBLKID = @DEPLIBBLKID@ @PRIVATE_LIBS_CMT@ $(LIBUUID)
 
 STATIC_LIBSS = $(LIB)/libss@STATIC_LIB_EXT@ @DLOPEN_LIB@
 STATIC_LIBCOM_ERR = $(LIB)/libcom_err@STATIC_LIB_EXT@ @SEM_INIT_LIB@
 STATIC_LIBE2P = $(LIB)/libe2p@STATIC_LIB_EXT@
 STATIC_LIBEXT2FS = $(LIB)/libext2fs@STATIC_LIB_EXT@
-STATIC_LIBUUID = $(LIB)/libuuid@STATIC_LIB_EXT@ @SOCKET_LIB@ 
+STATIC_LIBUUID = @STATIC_LIBUUID@ @SOCKET_LIB@
 STATIC_LIBBLKID = @STATIC_LIBBLKID@ $(STATIC_LIBUUID)
 DEPSTATIC_LIBSS = $(LIB)/libss@STATIC_LIB_EXT@
-DEPSTATIC_LIBUUID = $(LIB)/libuuid@STATIC_LIB_EXT@
+DEPSTATIC_LIBUUID = @DEPSTATIC_LIBUUID@
 DEPSTATIC_LIBBLKID = @DEPSTATIC_LIBBLKID@ $(STATIC_LIBUUID)
 
 PROFILED_LIBSS = $(LIB)/libss@PROFILED_LIB_EXT@ @DLOPEN_LIB@
 PROFILED_LIBCOM_ERR = $(LIB)/libcom_err@PROFILED_LIB_EXT@ @SEM_INIT_LIB@
 PROFILED_LIBE2P = $(LIB)/libe2p@PROFILED_LIB_EXT@
 PROFILED_LIBEXT2FS = $(LIB)/libext2fs@PROFILED_LIB_EXT@
-PROFILED_LIBUUID = $(LIB)/libuuid@PROFILED_LIB_EXT@ @SOCKET_LIB@ 
+PROFILED_LIBUUID = @PROFILED_LIBUUID@ @SOCKET_LIB@
 PROFILED_LIBBLKID = @PROFILED_LIBBLKID@ $(PROFILED_LIBUUID)
-DEPPROFILED_LIBUUID = $(LIB)/libuuid@PROFILED_LIB_EXT@
+DEPPROFILED_LIBUUID = @PROFILED_LIBUUID@
 DEPPROFILED_LIBBLKID = @PROFILED_LIBBLKID@ $(PROFILED_LIBUUID)
 
 # An include directive pointing to a directory holding enough linux-like