configure.ac: Fix Boost detection test

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14024 a5019735-40e9-0310-863c-91ae7b9d1cf9
Add tests for movi_4s_#imm8,lsl8 and ushr_d_d_#imm.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14025 a5019735-40e9-0310-863c-91ae7b9d1cf9
Add test cases for FMUL 2d_2d_d[], 4s_4s_s[], 2s_2s_s[].


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14026 a5019735-40e9-0310-863c-91ae7b9d1cf9
Fix the cleanup: line to avoid an error message in case the
file does not exist.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14027 a5019735-40e9-0310-863c-91ae7b9d1cf9