ibrcommon: Remove uclibc++ usage

The dependent packages fail to build when using uclibc++ due to some
missing feature. It's probably easy to add a fix but for right now, switch
back to fix compilation.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

libs/ibrcommon/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ibrcommon
 PKG_VERSION:=1.0.1
-PKG_RELEASE:=5
+PKG_RELEASE:=6
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://www.ibr.cs.tu-bs.de/projects/ibr-dtn/releases
@@ -20,13 +20,12 @@ PKG_LICENSE:=Apache-2.0
 PKG_INSTALL:=1
 PKG_FIXUP:=libtool
 
-include $(INCLUDE_DIR)/uclibc++.mk
 include $(INCLUDE_DIR)/package.mk
 
 define Package/ibrcommon
   SECTION:=libs
   CATEGORY:=Libraries
-  DEPENDS:=$(CXX_DEPENDS) +libpthread +librt +libnl +libopenssl
+  DEPENDS:=+libstdcpp +libpthread +librt +libnl +libopenssl
   TITLE:=IBR Common C++ Library
 endef