subversion: add unixodbc dependency

Compile tested: LEDE HEAD

If unixodbc package is present in the environment, subversion
fails to compile due to missing dependencies.

Fixes the dependency on unixodbc if unixodbc package is selected.

Signed-off-by: Val Kulkov <val.kulkov@gmail.com>

(cherry picked from commit 06a529df35)

net/subversion/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=subversion
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_VERSION:=1.9.5
 PKG_SOURCE_URL:=@APACHE/subversion
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
@@ -29,7 +29,7 @@ define Package/subversion/Default
   CATEGORY:=Network
   SUBMENU:=Version Control Systems
   TITLE:=A compelling replacement for CVS
-  DEPENDS:=+zlib +libsqlite3 +libapr +libaprutil +libmagic \
+  DEPENDS:=+zlib +libsqlite3 +PACKAGE_unixodbc:unixodbc +libapr +libaprutil +libmagic \
   	$(ICONV_DEPENDS) $(INTL_DEPENDS)
   URL:=http://subversion.apache.org/
 endef
@@ -80,6 +80,7 @@ endef
 
 TARGET_CFLAGS += $(FPIC)
 TARGET_CPPFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
+APU_LIBS=$(shell $(STAGING_DIR)/usr/bin/apu-1-config --link-libtool --libs)
 
 CONFIGURE_ARGS += \
 	--with-apr="$(STAGING_DIR)/usr/bin/apr-1-config" \
@@ -101,7 +102,7 @@ else
 endif
 
 CONFIGURE_VARS += \
-	LDFLAGS="$(TARGET_LDFLAGS) -lcrypt -lm \
+	LDFLAGS="$(TARGET_LDFLAGS) $(APU_LIBS) -lcrypt -lm \
 		-lz -lpthread $(if $(INTL_FULL),-lintl)"
 	CPPFLAGS="$(TARGET_CPPFLAGS)"