Rename spec -> test

'Test' is a lot more straightforward of a name.

script/fetch-fixtures

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-GRAMMARS_DIR=$(dirname $0)/../spec/fixtures/grammars
+GRAMMARS_DIR=$(dirname $0)/../test/fixtures/grammars
 
 fetch_grammar() {
   local grammar=$1

script/test

@@ -92,7 +92,7 @@ case ${mode} in
       --dsymutil=yes                             \
       --leak-check=${leak_check}                 \
       $cmd "${args[@]}" 2>&1 |                   \
-      grep --color -E '\w+_specs?.cc:\d+|$'
+      grep --color -E '\w+_tests?.cc:\d+|$'
     ;;
 
   debug)

script/trim-whitespace

@@ -1,3 +1,3 @@
 #!/usr/bin/env bash
 
-find src spec include -type f | xargs perl -pi -e 's/ +$//'
+find src test include -type f | xargs perl -pi -e 's/ +$//'