tree-wide: remove quiet mode from grep in test version checks

Remove the quiet mode flag (-q) from grep in version check commands
to ensure that their stdout output is visible.

While at it, switch the remaining regex matches (perl, sscep, awscli) to
fixed-string matching where appropriate, so that special characters in the
version string are matched literally.

For libzip, the zipcmp and zipmerge branches ran grep and then
unconditionally exited 0, so a version mismatch was never reported and
the version check override always passed.

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

lang/python/python-awscli/test.sh

@@ -11,7 +11,7 @@ assert driver is not None
 EOF
 
 # Verify the aws binary runs --version
-aws --version 2>&1 | grep -q "aws-cli" || {
+aws --version 2>&1 | grep -F "aws-cli" || {
     echo "ERROR: 'aws --version' did not produce expected output"
     exit 1
 }