Add new test program for pretty printing structures.

tests/helloprettyprint/.gitignore

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+helloprettyprint
+*.o
+

tests/helloprettyprint/Makefile

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+.PHONY: all
+all: helloprettyprint
+
+helloprettyprint: helloprettyprint.cpp
+	g++ -g -o helloprettyprint helloprettyprint.cpp
+
+.PHONY: clean
+clean:
+	rm -f helloprettyprint helloprettyprint.o
+

tests/helloprettyprint/README

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+
+Seer has a problem with enabling 'pretty printing' and structs have have \n characters.
+
+    https://github.com/epasveer/seer/issues/313
+
+    (gdb) set print pretty on
+
+Without pretty print
+    10^done,value="{B = 1, C = 0, D = \"asd\", E = std::vector<bool> of length 1, capacity 64 = {true}}"
+    11^done,value="1"
+
+With pretty print
+    10^done,value="{\n  B = 1,\n  C = 0,\n  D = \"asd\",\n  E = std::vector<bool> of length 1, capacity 64 = {true}\n}"
+    11^done,value="1"
+

tests/helloprettyprint/helloprettyprint.cpp

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+#include <iostream>
+#include <string>
+#include <vector>
+
+struct A
+{
+  int B;
+  float C;
+  std::string D;
+  std::vector<bool> E;
+};
+
+struct A f(int p)
+{
+  A a;
+  a.B = p;
+  a.D = "asd";
+  a.E.push_back(p > 0);
+  return a;
+}
+
+int main()
+{
+  A a = f(1);
+  std::cout << a.E[0] << std::endl;
+  return 0;
+}

tests/helloprettyprint/project.seer

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+{
+    "seerproject": {
+        "executable": "helloprettyprint",
+        "postgdbcommands": [
+            ""
+        ],
+        "pregdbcommands": [
+            "# Comment the next line out to disable \"pretty printing\".",
+            "set pretty printer on"
+        ],
+        "startmode": {
+            "arguments": "",
+            "breakinfunction": false,
+            "breakinfunctionname": "",
+            "breakinmain": true,
+            "breakpointsfile": "",
+            "nobreak": false,
+            "nonstopmode": false,
+            "randomizestartaddress": false,
+            "showassemblytab": false
+        },
+        "symbolfile": "",
+        "workingdirectory": ""
+    }
+}