Repect LIBTOOLFLAGS

This add a knob that can be controlled from env to set generic options
for libtool

Upstream-Status: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>

Index: uuid-1.6.2/Makefile.in
===================================================================
--- uuid-1.6.2.orig/Makefile.in
+++ uuid-1.6.2/Makefile.in
@@ -56,7 +56,7 @@ RM          = rm -f
 CP          = cp
 RMDIR       = rmdir
 SHTOOL      = $(S)/shtool
-LIBTOOL     = @LIBTOOL@
+LIBTOOL     = @LIBTOOL@ $(LIBTOOLFLAGS)
 TRUE        = true
 POD2MAN     = pod2man
 PERL        = @PERL@