Allow /bin/gawk as alternate

With /usr merge, debian makes /bin/gawk a symlink to /usr/bin/gawk.

Signed-off-by: Keith Packard <keithp@keithp.com>

Author: keith-packard

Makefile.in

@@ -48,7 +48,9 @@ ifneq (@GSED@,/bin/sed)
 	PATH := $(builddir)/scripts/wrapper/sed:$(PATH)
 endif
 ifneq (@GAWK@,/usr/bin/gawk)
-	PATH := $(builddir)/scripts/wrapper/awk:$(PATH)
+	ifneq (@GAWK@,/bin/gawk)
+		PATH := $(builddir)/scripts/wrapper/awk:$(PATH)
+	endif
 endif
 
 export PATH AWK SED