lang/python{27,32,33}: Fix missing shlib path in python-config

In Python 3.4+, upstream added and switched to using a shell
implementation of the python-config script [1]. The Python
implementation  (python-config.py) remained used by all versions < 3.4.

While the shell implementation returns the path to the Python
shared library when using the --ldflags script argument, the Python
implementation of the script does not. The bug has been reported, but
has not yet been merged [2].

The Python ports currently default to including ${LOCALBASE}/lib
in LIBS when the NLS option is enabled (which it is by default).

When built *with* NLS (gettext) support, the flags added to LIBS
are returned in `pythonX.Y-config --ldflags` output, which happens
to match the path to the Python shared library.

If the NLS option is disabled, ${LOCALBASE}/lib is not added to LIBS,
and are therefore not returned in --ldflags output.

This results in potential linking errors for software that uses
python-config to obtain the correct library path, when the NLS option is
disabled:

$ make WITH=PYTHON -C audio/alsa-lib
[...]
--- smixer-python.la ---
CCLD     smixer-python.la
/usr/bin/ld: cannot find -lpython2.7

This change modifies the python-config.in script to match the shell
implementation, outputting the library path in --ldflags output.

While I'm here:

for Python 3.2 and Python 3.3 ports, backport a library order
change [3]. This could affect linking with static libraries.

Use standard length lines and reduce diffs in pkg-message

[1] https://bugs.python.org/issue16235
[2] https://bugs.python.org/issue7352
[2] https://bugs.python.org/issue18096

PR:		197757
Submitted by:	jbeich
MFH:		2015Q4

1 files changed, 5 insertions, 5 deletions

diff --git a/lang/python32/pkg-message b/lang/python32/pkg-message
index e3d212860316..a5d11a0a0e4f 100644
--- a/lang/python32/pkg-message
+++ b/lang/python32/pkg-message
@@ -1,10 +1,10 @@
-====
-Note that some of the standard modules are provided as separate
-ports since they require extra dependencies:
+===========================================================================
+
+Note that some standard Python modules are provided as separate ports
+as they require additional dependencies. They are available as:
 
 gdbm            databases/py-gdbm
 sqlite3         databases/py-sqlite3
 tkinter         x11-toolkits/py-tkinter
 
-Install them as needed.
-====
+===========================================================================