imported a reworked version of BTL (Benchmark for Templated Libraries).
the modifications to initial code follow:
* changed build system from plain makefiles to cmake
* added eigen2 (4 versions: vec/novec and fixed/dynamic), GMM++, MTL4 interfaces
* added "transposed matrix * vector" product action
* updated blitz interface to use condensed products instead of hand coded loops
* removed some deprecated interfaces
* changed default storage order to column major for all libraries
* new generic bench timer strategy which is supposed to be more accurate
* various code clean-up

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 033e45a..95d5ff1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,12 @@
 OPTION(BUILD_TESTS "Build tests" OFF)
 OPTION(BUILD_DOC "Build documentation and examples" OFF)
 OPTION(BUILD_DEMOS "Build demos" OFF)
-OPTION(TEST_LIB "Build the unit tests using the library (disable -pedantic)" OFF)
+OPTION(BUILD_LIB "Build the binary shared library" OFF)
+OPTION(BUILD_BTL "Build benchmark suite" OFF)
+
+IF(BUILD_LIB)
+  OPTION(TEST_LIB "Build the unit tests using the library (disable -pedantic)" OFF)
+ENDIF(BUILD_LIB)
 
 SET(CMAKE_INCLUDE_CURRENT_DIR ON)
 
@@ -35,4 +40,8 @@
 ADD_SUBDIRECTORY(Eigen)
 ADD_SUBDIRECTORY(test)
 ADD_SUBDIRECTORY(doc)
-ADD_SUBDIRECTORY(demos)
\ No newline at end of file
+ADD_SUBDIRECTORY(demos)
+
+IF(BUILD_BTL)
+ADD_SUBDIRECTORY(bench/btl)
+ENDIF(BUILD_BTL)