[macports-base] branch master updated (c954ae761 -> c97e75d2c)

[Joshua Root]

Joshua Root (jmroot) pushed a change to branch master
in repository macports-base.

    from c954ae761 Regenerate configure with autoconf 2.72
     new 2dc4342ba configure: add missing AC_PROG_GREP
     new c97e75d2c Cache xcodeversion persistently

The 2 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "add" were already present in the repository and have only
been added to this reference.


Summary of changes:
 configure                    |  72 +++++++++++++++++++++++
 configure.ac                 |   1 +
 src/macports1.0/macports.tcl | 134 ++++++++++++++++++++++++++++++++-----------
 3 files changed, 174 insertions(+), 33 deletions(-)