samples/exifprint.cpp: syntax changed.

git-svn-id: svn://dev.exiv2.org/svn@3157 b7c8b350-86e7-0310-a4b4-de8f6a8f16a3
samples/exifprint: better command-line parser

git-svn-id: svn://dev.exiv2.org/svn@3158 b7c8b350-86e7-0310-a4b4-de8f6a8f16a3
config/Makefile: added targets exiv2 exifprint etc.  Simplied code for testx testv etc.

git-svn-id: svn://dev.exiv2.org/svn@3159 b7c8b350-86e7-0310-a4b4-de8f6a8f16a3
build: added xcode support

git-svn-id: svn://dev.exiv2.org/svn@3160 b7c8b350-86e7-0310-a4b4-de8f6a8f16a3