Restructure the project to match new modular layout.

include/boost/predef/compiler/gcc.h

@@ -0,0 +1,48 @@
+/*
+Copyright Redshift Software, Inc. 2008-2012
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE_1_0.txt or copy at
+http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+#ifndef BOOST_PREDEF_COMPILER_GCC_H
+#define BOOST_PREDEF_COMPILER_GCC_H
+
+#include <boost/predef/version_number.h>
+#include <boost/predef/make.h>
+
+/*`
+[heading `BOOST_COMP_GNUC`]
+
+[@http://en.wikipedia.org/wiki/GNU_Compiler_Collection Gnu GCC C/C++] compiler.
+Version number available as major, minor, and patch (if available).
+
+[table
+    [[__predef_symbol__] [__predef_version__]]
+
+    [[``] [__predef_detection__]]
+
+    [[``] [V.R.P]]
+    ]
+ */
+
+#define BOOST_COMP_GNUC BOOST_VERSION_NUMBER(0,0,0)
+
+#if defined(__GNUC__)
+#   undef BOOST_COMP_GNUC
+#   if defined(__GNUC_PATCHLEVEL__)
+#       define BOOST_COMP_GNUC \
+            BOOST_VERSION_NUMBER(__GNUC__,__GNUC_MINOR__,__GNUC_PATCHLEVEL__)
+#   else
+#       define BOOST_COMP_GNUC \
+            BOOST_VERSION_NUMBER(__GNUC__,__GNUC_MINOR__,0)
+#   endif
+#endif
+
+#define BOOST_COMP_GNUC_NAME "Gnu GCC C/C++"
+
+#include <boost/predef/detail/test.h>
+BOOST_PREDEF_DECLARE_TEST(BOOST_COMP_GNUC,BOOST_COMP_GNUC_NAME)
+
+
+#endif