remove hardcoded compiler optimizations and -g

Index: rts/lib/streflop/CMakeLists.txt
--- rts/lib/streflop/CMakeLists.txt.orig
+++ rts/lib/streflop/CMakeLists.txt
@@ -70,7 +70,7 @@ SET(libm_flt32_source
 
 SET(cxxflags "-I\"${CMAKE_CURRENT_SOURCE_DIR}/libm/headers\"")
 if   (NOT MSVC)
-	SET(cxxflags "${cxxflags} -w -O3")
+	SET(cxxflags "${cxxflags}")
 	if (NOT $ENV{CXX} MATCHES "icpc")
 		SET(cxxflags "${cxxflags} -mfpmath=sse -msse")
 	endif (NOT $ENV{CXX} MATCHES "icpc")
