package/boost: use BR2_ENABLE_RUNTIME_DEBUG iso BR2_ENABLE_DEBUG

BR2_ENABLE_DEBUG should just steer the availability of debug symbols and
should have no negative effect on performance.

Introduction of 'assert' statements, 'debug'-type builds with additional
logging, etc. should be steered by BR2_ENABLE_RUNTIME_DEBUG instead.

Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/boost/boost.mk

@@ -95,7 +95,7 @@ BOOST_OPTS += --no-cmake-config \
 	     toolset=gcc \
 	     threading=multi \
 	     abi=$(BOOST_ABI) \
-	     variant=$(if $(BR2_ENABLE_DEBUG),debug,release)
+	     variant=$(if $(BR2_ENABLE_RUNTIME_DEBUG),debug,release)
 
 ifeq ($(BR2_sparc64),y)
 BOOST_OPTS += architecture=sparc instruction-set=ultrasparc