tools: Convert more tools to use the yaml file.

vigil/tools.yaml

@@ -1,4 +1,16 @@
 
+c_syntax_gcc:
+  deps: [gcc g++-6] 
+  url: https://gcc.gnu.org/
+  executables: [gcc]
+  command: gcc -fsyntax-only
+
+php7_syntax:
+  deps: [php7.2-cli] 
+  url: https://en.wikipedia.org/wiki/PHP
+  executables: [php7.2]
+  command: php7.2 --syntax-check
+
 shellcheck:
   deps: [shellcheck]
   url: shellcheck