Updated build scripts

Author: sadko4u

make/system.mk

@@ -183,6 +183,7 @@ COMMON_VARS = \
 	PLATFORM \
 	ARCHITECTURE \
 	ARCHITECTURE_CFLAGS \
+	BUILDDIR \
 	FEATURES \
 	LIBRARY_EXT \
 	LIBRARY_PREFIX \
@@ -209,6 +210,7 @@ sysvars:
 	echo "  ARCHITECTURE              target architecture to perform build"
 	echo "  ARCHITECTURE_CFLAGS       compiler flags to specify architecture"
 	echo "  BINDIR                    location of the binaries"
+	echo "  BUILDDIR                  location of the build directory"
 	echo "  DEBUG                     build with debug options"
 	echo "  DEVEL                     build with modules checked out for read/write URL"
 	echo "  ETCDIR                    location of system configuration files"