pbio/image/fonts: Import Liberation and Terminus fonts.

LiberationSans-Regular.ttf comes from https://github.com/liberationfonts,
version 2.1.5, license OFL-1.1-RFN:

    Digitized data copyright (c) 2010 Google Corporation
      with Reserved Font Arimo, Tinos and Cousine.
    Copyright (c) 2012 Red Hat, Inc.
      with Reserved Font Name Liberation.

terminus-normal.otb comes from https://terminus-font.sourceforge.net/,
version 4.48, license OFL-1.1-RFN:

    Copyright (c) 2010-2014 Dimitar Toshkov Zhekov,
      with Reserved Font Name "Terminus Font".

They were previously read from the local file system.

Also move NxOS font in fonts directory.

Author: schodet

lib/pbio/src/image/Makefile

@@ -8,13 +8,13 @@ LIBERATION_COPYRIGHT = \
 	--copyright "  with Reserved Font Arimo, Tinos and Cousine." \
 	--copyright "Copyright (c) 2012 Red Hat, Inc." \
 	--copyright "  with Reserved Font Name Liberation."
-LIBERATION_SANS_REGULAR = /usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf
+LIBERATION_SANS_REGULAR = fonts/LiberationSans-Regular.ttf
 
 TERMINUS_LICENSE = "OFL-1.1-RFN"
 TERMINUS_COPYRIGHT = \
 	--copyright "Copyright (c) 2010-2014 Dimitar Toshkov Zhekov," \
 	--copyright '  with Reserved Font Name "Terminus Font".'
-TERMINUS_NORMAL = /usr/share/fonts/opentype/terminus/terminus-normal.otb
+TERMINUS_NORMAL = fonts/terminus-normal.otb
 
 NXOS_LICENSE = "GPL-2.0-only"
 NXOS_COPYRIGHT = \
@@ -28,7 +28,7 @@ font_liberationsans_regular_14.c: $(LIBERATION_SANS_REGULAR) $(FONTCONVERT)
 font_terminus_normal_16.c: $(TERMINUS_NORMAL) $(FONTCONVERT)
 	python3 $(FONTCONVERT) $< 16 --license $(TERMINUS_LICENSE) $(TERMINUS_COPYRIGHT) > $@
 
-font_mono_8x5_8.c: mono_8x5.png $(FONTCONVERT)
+font_mono_8x5_8.c: fonts/mono_8x5.png $(FONTCONVERT)
 	python3 $(FONTCONVERT) --image $< 8 --license $(NXOS_LICENSE) $(NXOS_COPYRIGHT) > $@
 
 .DELETE_ON_ERROR:

lib/pbio/src/image/fonts/LiberationSans-Regular.ttf

@@ -0,0 +1,18 @@
+The `LiberationSans-Regular.ttf` comes from
+https://github.com/liberationfonts, version 2.1.5, license OFL-1.1-RFN:
+
+    Digitized data copyright (c) 2010 Google Corporation
+      with Reserved Font Arimo, Tinos and Cousine.
+    Copyright (c) 2012 Red Hat, Inc.
+      with Reserved Font Name Liberation.
+
+The `terminus-normal.otb` font comes from
+https://terminus-font.sourceforge.net/, version 4.48, license OFL-1.1-RFN:
+
+    Copyright (c) 2010-2014 Dimitar Toshkov Zhekov,
+      with Reserved Font Name "Terminus Font".
+
+The `mono_8x5.png` font comes from NxOS project, license GPL-2.0-only:
+
+    Copyright (C) 2007 the NxOS developers
+    See lib/pbio/platform/nxt/nxos/AUTHORS for a full list of the developers.