Remove bootstrap from a build requires module.

* Add platform module as a build requires module instead of that.
* Add macros to remove some build dependencies.

ruby.yaml

@@ -20,12 +20,25 @@ data:
         tracker: https://bugs.ruby-lang.org/
     dependencies:
         buildrequires:
-            bootstrap: master
+            platform: master
+            autotools: master
         requires:
             platform: master
     components:
         # SRPMs
         rpms:
+            checksec:
+                rationale: Build dependency.
+                buildorder: 11
+                ref: master
+            libyaml:
+                rationale: Build dependency.
+                buildorder: 11
+                ref: master
+            multilib-rpm-config:
+                rationale: Build dependency.
+                buildorder: 11
+                ref: master
             ruby:
                 # From ruby.spec Summary
                 rationale: An interpreter of object-oriented scripting language
@@ -38,6 +51,13 @@ data:
                     dependencies
                 buildorder: 102
                 ref: master
+    buildopts:
+        rpms:
+            macros: |
+                %_without_rubypick 1
+                %_without_systemtap 1
+                %_without_git 1
+                %_without_cmake 1
     api:
         # RPMs
         # From *.spec %package