[macports-ports] branch master updated (4f0ad86 -> a83b4a2)

[MarcusCalhoun-Lopez]

MarcusCalhoun-Lopez pushed a change to branch master
in repository macports-ports.

    from 4f0ad86  gcc6 & gcc7: allow clang to use GCC header files
     new 91a4e1b  llvm-{4.0,devel}: make variant libstdcxx default
     new a83b4a2  llvm-3.9: allow clang to use MacPorts libstdc++

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:
 lang/llvm-3.9/Portfile                             | 16 +++++++++++
 .../files/9001-macports-libstdcxx.diff             | 32 +++++++++++-----------
 lang/llvm-4.0/Portfile                             |  4 +--
 lang/llvm-devel/Portfile                           |  4 +--
 4 files changed, 36 insertions(+), 20 deletions(-)
 copy lang/{llvm-devel => llvm-3.9}/files/9001-macports-libstdcxx.diff (90%)