configure: Check for -falign-jumps=1 beside -falign-loops=1
The Clang does not support -falign-jumps and only recently gained support
for -falign-loops. The -falign-jumps=1 should be tested beside
-fliang-loops=1 to avoid passing unrecognized options to the Clang:
clang-14: error: optimization flag '-falign-jumps=1' is not supported [-Werror,-Wignored-optimization-argument]
The -falign-functions=1 is supported by GCC 5.1.0/Clang 3.8.0. So, just
add the option unconditionally.
Signed-off-by: Fangrui Song <maskray@google.com> Acked-by: Paul Menzel <pmenzel@molgen.mpg.de> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>