K 10
svn:author
V 6
marino
K 8
svn:date
V 27
2015-12-29T12:03:09.676801Z
K 7
svn:log
V 613
lang/python27(3*), Mk/Uses/python.mk: remove make spawn

There are some inefficiencies in python.mk that significantly slow down
full tree scanning.  The use of bmake to obtain the current version of
a specific python is responsible for the majority of the slow done.

This commit splits out the PYTHON_PORTVERSION definition (which is the
same as the lang/python* PORTVERSION) into separate files.  With this
change, python.mk can simple include the makefile fragment instead of
spawning a new instance of make.

Different Revision:	https://reviews.freebsd.org/D4660
Approved by:		antoine (python), mva (python)

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