unixodbc: use 'install' when copying host binaries

'cp' fails with a text file busy error if it tries to overwrite an
executable file that is running.  'install' unlinks the file first, so
it will not cause the problem.

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>

libs/unixodbc/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=unixodbc
 PKG_VERSION:=2.3.9
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=unixODBC-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://www.unixodbc.org
@@ -152,7 +152,7 @@ endef
 
 define Host/Install
 	$(INSTALL_DIR) $(STAGING_DIR_HOST)/bin
-	$(CP) $(HOST_BUILD_DIR)/exe/odbc_config $(STAGING_DIR_HOST)/bin
+	$(INSTALL_BIN) $(HOST_BUILD_DIR)/exe/odbc_config $(STAGING_DIR_HOST)/bin
 endef
 
 $(eval $(call BuildPackage,unixodbc))