mcpp V.2.6.3 released

MCPP V.2.6.3 was just released.

MCPP is a portable C/C++ preprocessor, supporting GCC,
Visual C++, etc. Its source is highly configurable and can
generate executables of various specs. It accompanies a
validation suite to check preprocessor's conformance and
quality exhaustively.

The updated points from V.2.6.2 are as follows.

1. Revised sutle points of #include and '#pragma once'
handling, such as dereferencing symbolic linked
directory and others.

2. Relaxed syntax checking and token checking in lang_asm
mode. Implemented variadic macro of GCC3-specification
for GCC-specific- build. Increased compatibility of GCC-
specific-build to GCC.

3. Implemented optional memory buffer output (other than
file) in subroutine-build.

4. Added 'mcpplib' target to make subroutine-build in
configure.ac and noconfig/*.mak.

5. Abolished 'install-data' and 'uninstall-data' targets of
configured makefile. On the other hand, made 'install'
target install also mcpp-manual.html.

6. Provided stand-alone-and-compiler-independent-build
binary packages: .pkg, .rpm, .deb, .zip and their
corresponding source packages.