initial import of MPC 0.9 package.

MPC is a C library for the arithmetic of complex numbers with
arbitrarily high precision and correct rounding of the result.
It is built upon and follows the same principles as MPFR.

GCC >= 4.2 requires MPC.

external/lgpl2/mpc/dist/AUTHORS

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+Main authors:
+   Andreas Enge
+   Philipe Théveny
+   Paul Zimmermann
+
+Mickaël Gastineau has contributed the file Makefile.vc.

external/lgpl2/mpc/dist/INSTALL

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+                        Installing MPC
+                        ==============
+
+This is for the impatient, for deeper explanations see Installing MPC chapter
+in the Texinfo documentation (type 'info mpc.info').
+
+0. You first need to install GMP and MPFR. See <http://gmplib.org/>
+   and <http://www.mpfr.org>.
+   MPC requires GMP version 4.3.2 or later and MPFR version 2.4.2 or later.
+
+1. In the directory of the MPC archive, type
+
+      tar xzf mpc-0.9.tar.gz
+      cd mpc-0.9
+      ./configure
+      make
+
+   This assumes that GMP and MPFR are installed in a directory searched by
+   default by the compiler. Otherwise, use --with-gmp=DIR or --with-mpfr=DIR
+   (see the Texinfo documentation).
+
+2. You can optionally run the test suit, type
+
+      make check
+
+3. To install the MPC library, type
+
+      make install
+
+      By default, the files are copied into /usr/local subdirectories. You
+      need write permissions on these directories.
+
+4. You can optionally create documentation, type
+
+      make dvi
+
+   or
+
+      make ps
+
+   This requires the Texinfo package (version 4.2 at least).
+
+In case of difficulties, please send a description of the problem to
+<mpc-discuss@lists.gforge.inria.fr>.
+
+##############################################################################
+
+Note for AIX users:
+===================
+
+If GMP was built with the 64-bit ABI, before building and testing MPC,
+it might be necessary to set the OBJECT_MODE environment variable to 64
+by, e.g.,
+   export OBJECT_MODE=64
+This has been tested with the C compiler IBM XL C/C++ Enterprise Edition
+V8.0 for AIX, version: 08.00.0000.0021, GMP 4.2.4 and MPFR 2.4.1.
+
+##############################################################################
+
+Note for Windows users:
+=======================
+
+There is a special file Makefile.vc for Windows, contributed by Mickael
+Gastineau. This file works both for the Windows Server 2003 R2 Platform SDK,
+and for the Windows SDK of Vista. To use it, simply replace "make" by
+"nmake /f makefile.vc" in the above instructions:
+
+compilation :
+nmake /f makefile.vc GMP=<gmp_install_dir> MPFR=<mpfr_install_dir>
+
+clean :
+nmake /f makefile.vc GMP=<gmp_install_dir> MPFR=<mpfr_install_dir> clean
+
+check :
+nmake /f makefile.vc GMP=<gmp_install_dir> MPFR=<mpfr_install_dir> check
+
+For any issue related to the makefile.vc file, please contact directly
+Mickael Gastineau at <gastineau at imcce dot fr> (replace 'at' by '@',
+and 'dot' by '.').
+
+If you want to compile mpc with mingw in the msys shell, you might need to
+add the following to the configure command (or in your environment):
+
+LDFLAGS=-L/usr/local/lib CPPFLAGS=-I/usr/local/include
+
+(reported by Sisyphus)

external/lgpl2/mpc/dist/Makefile.am

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+## Makefile.am -- Process this file with automake to produce Makefile.in
+ACLOCAL_AMFLAGS = -I m4
+
+SUBDIRS = src tests doc
+
+EXTRA_HEADERS = src/mpc-log.h
+include_HEADERS = src/mpc.h @MPC_LOG_H@
+EXTRA_DIST = src/mpc-log.h tests/tgeneric.c Makefile.vc