Add legacy VS 2008 project files support and some bug fixes

• Add legacy VS 2008 project files support (merged from zhongpan pull request)
• Fix that in some conditions the tool could hang (this is due to a loop not terminating when it should: ac107ed )
• Solve that including a header whose name is a substring of another could cause the inclusion of the latter twice. E.g. #include <QString> may be converted to #include <QStringList> in the stdafx.h

Bug fixing release

• Environment variables referenced in .vcxproj are now expanded
• Now when reading .vcproj files (Visual Studio 2008 or previous) a warning is displayed instead of crashing

Added multicore support

• Added multicore support when processing Visual Studio solution files. Now multiple Visual Studio project files (.vcxproj) may be processed concurrently depending on the underlying hardware
• Solved problems with include paths that was causing the tool to not find some headers. Now every path is converted to an absolute path before passing it to boost wave, avoiding calling chdir() when processing every .vcxproj to resolve relative paths properly
• Added option --excluderegexp, useful to exclude files according to a regular expression, e.g. to exclude Qt moc files or C files (that end on .c instead of .cpp)
• Added tests

Release with Visual Studio project files support

• This release adds support for .vcxproj and .sln files, to avoid the need to specify all file inputs, include paths and macros from the command line.
• Also improves performance over the previous version thanks to peitschie's pull request (#1)

Initial release

v0.1.0

Update README.md