contrib: allow override-style syntax for vars & routines

Currently, the variable and routine regexes don't support the
override-style syntax. This means we may break routine blocks, as we
don't recognise overridden routines with an :append/:prepend/etc.

This change adds the ":" char to the var & routine regexes.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

contrib/oe-stylize.py

@@ -210,8 +210,8 @@ OE_vars = [
     'others'
 ]
 
-varRegexp = r'^([a-zA-Z_0-9${}-]*)([ \t]*)([+.:]?=[+.]?)([ \t]*)([^\t]+)'
-routineRegexp = r'^([a-zA-Z0-9_ ${}-]+?)\('
+varRegexp = r'^([a-zA-Z_0-9${}:-]*)([ \t]*)([+.:]?=[+.]?)([ \t]*)([^\t]+)'
+routineRegexp = r'^([a-zA-Z0-9_ ${}:-]+?)\('
 
 # Variables seen in the processed .bb
 seen_vars = {}