* Be less strict in the check for MASTER_SITE_SUBDIR use.
This change checks that the subdirectory used is actually different
than what is defined in MASTER_SITES_SUBDIRS. To make this easier to
do, support has been added to single-quote variables passed to the
get_makevar* functions. [1]
* Now only PY_FLAVOR is recommended as opposed to FLAVOR. [2]
* Remove an errant ':' when suggesting PY_FLAVOR. [3]
PR: 228227 [1]
Requested by: mat [2]
Reported by: koobs [3]
02cd77c8b7