[FS#55] Image Builder: incorrect profile names and broken multi-profile logic - Task opened (Attachment added)

[LEDE Bugs]

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

User who did this - Stan (stangri) 

Attached to Project - LEDE Project
Summary - Image Builder: incorrect profile names and broken multi-profile logic
Task Type - Bug Report
Category - Toolchain
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Since about revision 90x or so, the image builder started to take things like DEVICE_DIR505A1 instead of just DIR505A1 as the profile name and I believe around the same time it started building a lot of other device images and taking forever when I specified DEVICE_DIR505A1 profile. I'm wondering if something was broken in Image Builder and/or if the multi-profile logic was broken.

The steps to reproduce are:
1. Download the Image Builder from https://downloads.lede-project.org/snapshots/targets/ar71xx/generic/lede-imagebuilder-ar71xx-generic.Linux-x86_64.tar.bz2 and unpack it
2. Run make clean and make image PROFILE=DEVICE_DIR505A1
3. End up with 229 files in bin/targets/ar71xx/generic as per attached

PS. The exact make image command I use is: make image PROFILE=DEVICE_DIR505A1 PACKAGES="kmod-ath9k libpolarssl libustream-mbedtls libmbedtls openssh-sftp-server ip6tables-mod-nat ipset ip openvpn-polarssl miniupnpd luci luci-app-upnp luci-app-vnstat luci-theme-material luci-app-openvpn iwinfo nano htop iftop coreutils-sort -dnsmasq dnsmasq-full dnscrypt-proxy -wpad-mini wpad" FILES=dir-505/

One or more files have been attached.

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=55