doc: fix graphviz scanning and processing

The doc build process copies files using script/extract-content.py from
outside of the doc/ folder (specifically content in the tools/ folders).
The script was not copying graphviz directive files.  This has been
fixed and the embedded graphviz directives are not (properly) stored in
separate image/*.dot files.

Note the extract-content.py file is derived from the Zephyr project.

Signed-off-by: David B. Kinder <david.b.kinder@intel.com>

tools/acrn-crashlog/README.rst

@@ -79,20 +79,11 @@ telemetrics-client on the system:
    telemetrics daemon. The work flow of ``acrnprobe`` and
    telemetrics-client is shown in :numref:`crashlog-workflow`:
 
-.. graphviz::
+.. graphviz:: images/crashlog-workflow.dot
    :name: crashlog-workflow
    :align: center
    :caption: acrnprobe and telemetrics-client workflow
 
-    digraph {
-       bgcolor=transparent; rankdir=LR;
-       node [shape="rectangle" style="filled" color="lightblue"]
-       edge [fontsize="12" fontcolor="blue"]
-
-       "acrnprobe" -> "telemetrics-client" [label="crashlog\npath"]
-       "telemetrics-client" -> "backend"   [label="log\ncontent"]
-    }
-
 
 Crashlog can be retrieved with ``telem_journal`` command:
 

tools/acrn-crashlog/acrnprobe/conf.rst

@@ -97,29 +97,10 @@ D inherit from crash A, and crash C is the child of crash B.
 Build crash tree in configuration
 =================================
 
-.. graphviz::
-
-   digraph {
-      {
-         node [shape=plaintext];
-         "level 1" -> "level 2" -> "level 3";
-      }
-
-      node [shape=box;style="rounded,filled";color=AntiqueWhite;];
-      c1 [ label="crash A\nid 1\ncrash root" ];
-      c2 [ label="crash B\nid 2" ];
-      c3 [ label="crash C\nid 3\ncrash leaf" ];
-      c4 [ label="crash D\nid 4\ncrash leaf" ];
-      c5 [ label="crash E\nid 5\ncrash root\ncrash leaf" ];
-      { rank = same; "level 1"; c1; c5;}
-      { rank = same; "level 2"; c2; c4;}
-      { rank = same; "level 3"; c3;}
-
-      node [shape=box;color="transparent";];
-      "None" -> {c1 c5} [ label="inherit 0" ];
-      c1 -> {c2 c4} [ label="inherit 1" ];
-      c2 -> c3 [ label="inherit 2" ];
-   }
+.. graphviz:: images/crash-config.dot
+   :name: crash-config
+   :align: center
+   :caption: Build crash tree in configuration
 
 Match crash at runtime
 ======================
@@ -136,33 +117,10 @@ If a crash A is triggered, then the candidates are crash A, B, C and D.
 The following diagram describes what ``acrnprobe`` will do if the matched
 result is crash D.
 
-.. graphviz::
-
-   digraph {
-      {
-         node [shape=plaintext];
-         "level 1" -> "level 2" -> "level 3";
-      }
-
-      node [shape=box;style="rounded,filled";color=AntiqueWhite;];
-      c1 [ label="crash A\nid 1\ncrash root" ];
-      c2 [ label="crash B\nid 2" ];
-      c3 [ label="crash C\nid 3\ncrash leaf" ];
-      c4 [ label="crash D\nid 4\ncrash leaf" ];
-      { rank = same; "level 1"; c1;}
-      { rank = same; "level 2"; c2; c4;}
-      { rank = same; "level 3"; c3;}
-
-      node [shape=box;style="rounded,dashed";];
-      exp1 [ label="crash B matches fail\nmatch for the next child\nof crash A"];
-      exp2 [ label="crash D matches successfully\nreturn crash D"];
-
-      node [shape=box;style="invis";];
-      "channel" -> c1 [ label="trigger" ]
-      c1 -> {exp1 exp2}
-      exp1 -> c2 -> c3 [ style=dashed dir=none]
-      exp2 -> c4
-   }
+.. graphviz:: images/crash-match.dot
+   :name: crash-match
+   :align: center
+   :caption: Match crash at runtime
 
 Sections
 ********

tools/acrn-crashlog/acrnprobe/images/crash-config.dot

@@ -0,0 +1,21 @@
+digraph {
+  {
+     node [shape=plaintext];
+     "level 1" -> "level 2" -> "level 3";
+  }
+
+  node [shape=box;style="rounded,filled";color=AntiqueWhite;];
+  c1 [ label="crash A\nid 1\ncrash root" ];
+  c2 [ label="crash B\nid 2" ];
+  c3 [ label="crash C\nid 3\ncrash leaf" ];
+  c4 [ label="crash D\nid 4\ncrash leaf" ];
+  c5 [ label="crash E\nid 5\ncrash root\ncrash leaf" ];
+  { rank = same; "level 1"; c1; c5;}
+  { rank = same; "level 2"; c2; c4;}
+  { rank = same; "level 3"; c3;}
+
+  node [shape=box;color="transparent";];
+  "None" -> {c1 c5} [ label="inherit 0" ];
+  c1 -> {c2 c4} [ label="inherit 1" ];
+  c2 -> c3 [ label="inherit 2" ];
+}

tools/acrn-crashlog/acrnprobe/images/crash-match.dot

@@ -0,0 +1,26 @@
+digraph {
+  {
+     node [shape=plaintext];
+     "level 1" -> "level 2" -> "level 3";
+  }
+
+  node [shape=box;style="rounded,filled";color=AntiqueWhite;];
+  c1 [ label="crash A\nid 1\ncrash root" ];
+  c2 [ label="crash B\nid 2" ];
+  c3 [ label="crash C\nid 3\ncrash leaf" ];
+  c4 [ label="crash D\nid 4\ncrash leaf" ];
+  { rank = same; "level 1"; c1;}
+  { rank = same; "level 2"; c2; c4;}
+  { rank = same; "level 3"; c3;}
+
+  node [shape=box;style="rounded,dashed";];
+  exp1 [ label="crash B matches fail\nmatch for the next child\nof crash A"];
+  exp2 [ label="crash D matches successfully\nreturn crash D"];
+
+  node [shape=box;style="invis";];
+  "channel" -> c1 [ label="trigger" ]
+  c1 -> {exp1 exp2}
+  exp1 -> c2 -> c3 [ style=dashed dir=none]
+  exp2 -> c4
+}
+

tools/acrn-crashlog/images/crashlog-workflow.dot

@@ -0,0 +1,8 @@
+digraph {
+   bgcolor=transparent; rankdir=LR;
+   node [shape="rectangle" style="filled" color="lightblue"]
+   edge [fontsize="12" fontcolor="blue"]
+
+   "acrnprobe" -> "telemetrics-client" [label="crashlog\npath"]
+   "telemetrics-client" -> "backend"   [label="log\ncontent"]
+}

tools/acrn-crashlog/usercrash/README.rst

@@ -7,7 +7,7 @@ Description
 ***********
 
 The ``usercrash`` tool gets the crash info for the crashing process in
-userpace. The collected information is saved as usercrash_xx under
+userspace. The collected information is saved as usercrash_xx under
 ``/var/log/usercrashes/``.
 
 Design