ENH: Added text files group to DSP output. CMakeLists.txt is duplicated in this group and outside, but fixing this will require a reorganization of custom rule generation. I should get to that soon.

Source/cmDSPMakefile.cxx

@@ -189,6 +189,9 @@ void cmDSPMakefile::WriteDSPFile(std::ostream& fout)
   this->WriteDSPBeginGroup(fout, "XML Files", "xml");
   this->WriteDSPBuildRules(fout,"xml");
   this->WriteDSPEndGroup(fout);
+  this->WriteDSPBeginGroup(fout, "Text Files", "txt");
+  this->WriteDSPBuildRules(fout,"txt");
+  this->WriteDSPEndGroup(fout);
   this->WriteDSPBuildRule(fout);
   this->WriteDSPFooter(fout);
 }

Source/cmDSPWriter.cxx

@@ -189,6 +189,9 @@ void cmDSPMakefile::WriteDSPFile(std::ostream& fout)
   this->WriteDSPBeginGroup(fout, "XML Files", "xml");
   this->WriteDSPBuildRules(fout,"xml");
   this->WriteDSPEndGroup(fout);
+  this->WriteDSPBeginGroup(fout, "Text Files", "txt");
+  this->WriteDSPBuildRules(fout,"txt");
+  this->WriteDSPEndGroup(fout);
   this->WriteDSPBuildRule(fout);
   this->WriteDSPFooter(fout);
 }