• libzip 1.1.3 archivers     C library for reading, creating, and modifying ZIP archives
• denemo 2.0.6_2 audio   Graphical score editor
• libamrnb 11.0.0.0_1,2 audio   3GPP floating-point Adaptive Multi-Rate (AMR) Speech Codec
• libamrwb 11.0.0.0_2 audio   3GPP Adaptive Multi-Rate - Wideband (AMR-WB) Speech Codec
• gcc base    
• astk-serveur 1.13.8.2 cad   Graphical interface for Code_Aster (server side)
• jspice3 2.5.110615 cad   Adaptation of the Berkeley Spice3f4 with superconductivity
• big5width 1.0 chinese    Unicode width dirty fix for Big5 font (zh_TW.UTF-8 locale)
• cutter 1.2.4_1 devel   Unit Testing Framework for C and C++
• libc++ 208080 devel    LLVM C++ standard library with c++11 support

The output of tools like awk, date, sort, tr,... depends on the current
locale set by the user.  Add LANG=C and LC_ALL=C at the beginning of
bsd.port.mk and export them so all commands are executed with the C locale.
LC_ALL=C overrides all other LC_* variables.  LANG is used by setlocale(3)
as default value for LC_* variables, so normally it isn't used when LC_ALL
is set, but there's code out there that looks at LANG directly so it's safer
to set it as well.  The only commands not captured by this are !=
assignments before any inclusion of bsd.port.*mk.

Introduce USE_LOCALE=<locale> that adds LANG=<locale> and LC_ALL=<locale> to
CONFIGURE_ENV and MAKE_ENV so upstream build systems can be executed with a
different locale (e.g. USE_LOCALE=en_US.UTF-8).

PR:		215882
Exp-run by:	antoine
Approved by:	portmgr (antoine)