Merge pull request #26 from corporateshark/master

Added Eigen header-only library

ports/eigen3/CONTROL

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+Source: eigen3
+Version: 3.2.9
+Description: C++ template library for linear algebra: matrices, vectors, numerical solvers, and related algorithms.

ports/eigen3/portfile.cmake

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+include(vcpkg_common_functions)
+vcpkg_download_distfile(ARCHIVE
+    URL "http://bitbucket.org/eigen/eigen/get/3.2.9.tar.bz2"
+    FILENAME "eigen-3.2.9.tar.bz2"
+    MD5 de11bfbfe2fd2dc4b32e8f416f58ee98
+)
+vcpkg_extract_source_archive(${ARCHIVE})
+
+# Put the licence file where vcpkg expects it
+file(RENAME ${CURRENT_BUILDTREES_DIR}/src/eigen-eigen-dc6cfdf9bcec ${CURRENT_BUILDTREES_DIR}/src/eigen)
+file(COPY ${CURRENT_BUILDTREES_DIR}/src/eigen/COPYING.README DESTINATION ${CURRENT_PACKAGES_DIR}/share/eigen3/COPYING.README)
+file(RENAME ${CURRENT_PACKAGES_DIR}/share/eigen3/COPYING.README ${CURRENT_PACKAGES_DIR}/share/eigen3/copyright)
+
+file(GLOB_RECURSE GARBAGE ${CURRENT_BUILDTREES_DIR}/src/eigen/Eigen/CMakeLists.*)
+file(REMOVE ${GARBAGE})
+
+# Copy the eigen header files
+file(COPY ${CURRENT_BUILDTREES_DIR}/src/eigen/Eigen/ DESTINATION ${CURRENT_PACKAGES_DIR}/include/Eigen/)
+vcpkg_copy_pdbs()