Allow LDFLAGS to come from build env, for the Gentoo fringe dwellers.

Merge of master-melb:xfs-cmds:25860a by kenmcd.

include/builddefs.in

@@ -10,6 +10,7 @@ _BUILDDEFS_INCLUDED_ = 1
 DEBUG = @debug_build@
 OPTIMIZER = @opt_build@
 MALLOCLIB = @malloc_lib@
+LOADERFLAGS = @LDFLAGS@
 
 LIBXFS = @libxfs@
 LIBACL = @libacl@

include/buildmacros

@@ -9,7 +9,7 @@ BUILDRULES = $(TOPDIR)/include/buildrules
 # $(CXXFILES), or $(HFILES) and is used to construct the manifest list
 # during the "dist" phase (packaging).
 
-LDFLAGS = $(LLDFLAGS)
+LDFLAGS += $(LOADERFLAGS) $(LLDFLAGS)
 LDLIBS = $(LLDLIBS) $(PLDLIBS) $(MALLOCLIB)
 
 MAKEOPTS = --no-print-directory