hopefully fix gmock/gtest detection
Removed shameful not stable mark from Local Alignment string kernel
fix argmax/max in sgvector

for float/double: isamax computes the argmax of abs(vector)
not the max! introduce new max_abs / arg_max_abs functions for that and
add tests for these too.
use expect_double_eq for double comparison
Preparations for GCOV code coverage tool usage

Ignored .gcno file extension
Updated Makefile to clean .gcno files
Dummy malsar routines doc