Make arguments redo, subproject elimination (#1784)

* redo make args to use colons, better folder structuring system [skip ci]

* don't put spaces after statements - hard lessons in makefile development

* fix-up some other rules.mk

* give travis a chance

* reset KEYMAPS variable

* start converting keyboards to new system

* try making all with travis

* redo make args to use colons, better folder structuring system [skip ci]

* don't put spaces after statements - hard lessons in makefile development

* fix-up some other rules.mk

* give travis a chance

* reset KEYMAPS variable

* start converting keyboards to new system

* try making all with travis

* start to update readmes and keyboards

* look in keyboard directories for board.mk

* update visualizer rules

* fix up some other keyboards/keymaps

* fix arm board ld includes

* fix board rules

* fix up remaining keyboards

* reset layout variable

* reset keyboard_layouts

* fix remainging keymaps/boards

* update readmes, docs

* add note to makefile error

* update readmes

* remove planck keymap warnings

* update references and docs

* test out tarvis build stages

* don't use stages for now

* don't use stages for now

keyboards/minidox/minidox.h

@@ -1,7 +1,7 @@
 #ifndef MINIDOX_H
 #define MINIDOX_H
 
-#ifdef SUBPROJECT_rev1
+#ifdef KEYBOARD_minidox_rev1
     #include "rev1.h"
 #endif
 

keyboards/minidox/readme.md

@@ -10,7 +10,7 @@ Hardware Supported: MiniDox PCB rev1 Pro Micro
 
 Make example for this keyboard (after setting up your build environment):
 
-    make minidox-rev1-default
+    make minidox/rev1:default
 
 See [build environment setup](https://docs.qmk.fm/build_environment_setup.html) then the [make instructions](https://docs.qmk.fm/make_instructions.html) for more information.
 
@@ -22,8 +22,8 @@ Flashing
 -------
 Note: Most of this is copied from the Let's Split readme, because it is awesome
 
-From the `minidox` directory run `make SUBPROJECT-KEYMAP-avrdude` for automatic serial port resolution and flashing.
-Example: `make rev1-default-avrdude`
+From the root directory run `make PROJECT:KEYMAP:avrdude` for automatic serial port resolution and flashing.
+Example: `make minidox/rev1:default:avrdude`
 
 Choosing which board to plug the USB cable into (choosing Master)
 --------

keyboards/minidox/rev1/rules.mk

@@ -1,5 +1 @@
-BACKLIGHT_ENABLE = no
-
-ifndef QUANTUM_DIR
-	include ../../../Makefile
-endif
+BACKLIGHT_ENABLE = no

keyboards/minidox/rules.mk

@@ -72,3 +72,5 @@ USE_I2C ?= no
 SLEEP_LED_ENABLE ?= no    # Breathing sleep LED during USB suspend
 
 CUSTOM_MATRIX = yes
+
+DEFAULT_FOLDER = minidox/rev1

keyboards/minidox/subproject.mk

@@ -1 +0,0 @@
-SUBPROJECT_DEFAULT = rev1