UPM 2048 and opsz axis (#462)

- UPM is adjusted to 2048
- Additional opsz VF axis (multi master) added which will eventually replace the separate Display family
- New tooling that uses fontmake instead of Inter's own fontbuild toolchain. (The old toolchain is still supported, i.e. `make -f Makefile_v1.make ...`)

misc/tools/patch-version.py

@@ -0,0 +1,32 @@
+# Updates "?v=x" in files
+import os, sys, re
+from os.path import dirname, basename, abspath, relpath, join as pjoin
+sys.path.append(abspath(pjoin(dirname(__file__), 'tools')))
+from common import BASEDIR, getVersion
+
+version = getVersion()
+
+def updateCSSFile(filename):
+  regex = re.compile(r'(url\("[^"]+?v=)([^"]+)("\))')
+  with open(filename, 'r') as f:
+    s = f.read()
+  s = regex.sub(lambda m: '%s%s%s' % (m.group(1), version, m.group(3)), s)
+  with open(filename, 'w') as f:
+    f.write(s)
+
+
+def updateHTMLFile(filename):
+  regex = re.compile(r'((?:href|src)="[^"]+?v=)([^"]+)(")')
+  with open(filename, 'r') as f:
+    s = f.read()
+  s = regex.sub(lambda m: '%s%s%s' % (m.group(1), version, m.group(3)), s)
+  with open(filename, 'w') as f:
+    f.write(s)
+
+for fn in sys.argv[1:]:
+  if fn.endswith(".css"):
+    updateCSSFile(fn)
+  elif fn.endswith(".html"):
+    updateHTMLFile(fn)
+  else:
+    raise "Unexpected file type %r" % fn