[FS#348] Dependency issue breaks what was a valid config

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Kabuli Chana (anomeome) 

Attached to Project - LEDE Project
Summary - Dependency issue breaks what was a valid config
Task Type - Build Failure
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Very Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Dependency issue on build packaging, unset libustream-polarssl to resolve.

Configuring dnsmasq-full.
Collected errors:
 * check_data_file_clashes: Package libustream-polarssl wants to install file /home/0util/br/wrtv1/source/build_dir/target-arm_cortex-a9+vfpv3_musl-1.1.15_eabi/root-mvebu/lib/libustream-ssl.so
        But that file is already provided by package  * libustream-mbedtls
 * opkg_install_cmd: Cannot install package libustream-polarssl.
package/Makefile:60: recipe for target 'package/install' failed
make[2]: *** [package/install] Error 255
make[2]: Leaving directory '/home/0util/br/wrtv1/source'
package/Makefile:129: recipe for target '/home/0util/br/wrtv1/source/staging_dir/target-arm_cortex-a9+vfpv3_musl-1.1.15_eabi/stamp/.package_install' failed




More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=348