Fix the build with GCC 4.8.  Coin mixes stdlib.h (the C header) and cstdlib
(the C++ header) quite freely, which results in conflicts and fails with
recent compilers.  Address this via a post-patch substitution to avoid some
70 individual patches.

PR:		192133
Submitted by:	Christoph Moench-Tegeder <cmt@burggraben.net>


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@366193 35697150-7ecd-e111-bb59-0022644237b5
Use CONFIGURE_SHELL and MAKE_SHELL to define SHELL and CONFIG_SHELL

PR:		192981
Approved by:	portmgr (antoine)


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@366194 35697150-7ecd-e111-bb59-0022644237b5
- Convert to USES=libtool
- This port runs configure using bash so the libtool script it generates
  must also run with bash; set CONFIGURE_SHELL to accomplish this
- Add INSTALL_TARGET=install-strip
- Remove PTHREAD_CFLAGS and PTHREAD_LIBS
- Remove Xorg dependencies


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@366195 35697150-7ecd-e111-bb59-0022644237b5