moving XACC.hpp to xacc.hpp, updated licenses and docs in xacc/

Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>

python/compiler/pyxasm_compiler.cpp

 #include "IRProvider.hpp"
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "xacc_service.hpp"
 
 #include "pyxasmLexer.h"

python/compiler/pyxasm_listener.cpp

 #include "IR.hpp"
 #include "IRProvider.hpp"
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "xacc_service.hpp"
 #include "expression_parsing_util.hpp"
 

python/compiler/tests/PyXASMCompilerTester.cpp

 #include "gtest/gtest.h"
 
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "xacc_service.hpp"
 
 #include "Circuit.hpp"

python/plugin_generator/templates/compiler/compiler/{compiler_class_name}.cpp

 #include "{compiler_class_name}.hpp"
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "IRProvider.hpp"
 
 namespace xacc {{

python/plugin_generator/templates/compiler/tests/{compiler_class_name}Tester.cpp

 #include <gtest/gtest.h>
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "{compiler_class_name}.hpp"
 
 using namespace xacc;

python/plugin_generator/templates/gate_instruction/tests/{inst_class_name}Tester.cpp

 #include <gtest/gtest.h>
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "{inst_class_name}.hpp"
 
 using namespace xacc;

python/plugin_generator/templates/irtransformation/tests/{irt_class_name}Tester.cpp

 #include <gtest/gtest.h>
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "{irt_class_name}.hpp"
 
 using namespace xacc;

python/xacc-py.cpp

@@ -11,7 +11,7 @@
  *   Alexander J. McCaskey - initial API and implementation
  *******************************************************************************/
 #include "CompositeInstruction.hpp"
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "heterogeneous.hpp"
 #include "xacc_service.hpp"
 

quantum/annealing/compiler/default/DefaultParameterSetter.cpp

@@ -11,7 +11,7 @@
  *   Alexander J. McCaskey - initial API and implementation
  *******************************************************************************/
 #include "DefaultParameterSetter.hpp"
-#include "XACC.hpp"
+#include "xacc.hpp"
 
 namespace xacc {
 namespace quantum {

quantum/annealing/ir/AnnealingProgram.hpp

@@ -15,7 +15,7 @@
 
 #include "CompositeInstruction.hpp"
 #include "DWQMI.hpp"
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "expression_parsing_util.hpp"
 
 namespace xacc {

quantum/examples/qasm/deuteron.cpp

-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "Optimizer.hpp"
 #include "PauliOperator.hpp"
 #include "xacc_service.hpp"

quantum/examples/qasm/deuteron_vqe_algo.cpp

-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "Optimizer.hpp"
 #include "PauliOperator.hpp"
 #include "xacc_service.hpp"

quantum/gate/ir/tests/GateTester.cpp

@@ -2,7 +2,7 @@
 #include <stdexcept>
 #include "CommonGates.hpp"
 #include "Circuit.hpp"
-#include "XACC.hpp"
+#include "xacc.hpp"
 using namespace xacc::quantum;
 
 TEST(GateTester, checkBasicGatesAndCircuits) {

quantum/gate/utils/tests/AllGateVisitorTester.cpp

@@ -12,7 +12,7 @@
  *******************************************************************************/
 #include <gtest/gtest.h>
 #include "AllGateVisitorTester.hpp"
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "Circuit.hpp"
 
 using namespace xacc::quantum;

quantum/gate/utils/tests/IRToGraphVisitorTester.cpp

@@ -15,7 +15,7 @@
 #include "IRToGraphVisitor.hpp"
 #include "CommonGates.hpp"
 #include "InstructionIterator.hpp"
-#include "XACC.hpp"
+#include "xacc.hpp"
 
 using namespace xacc::quantum;
 

quantum/gate/utils/tests/JsonVisitorTester.cpp

@@ -14,7 +14,7 @@
 #include "Circuit.hpp"
 #include "JsonVisitor.hpp"
 #include "CommonGates.hpp"
-#include "XACC.hpp"
+#include "xacc.hpp"
 #define RAPIDJSON_HAS_STDSTRING 1
 #include "rapidjson/prettywriter.h"
 using namespace rapidjson;

quantum/observable/fermion/tests/FermionOperatorTester.cpp

@@ -30,7 +30,7 @@
  **********************************************************************************/
 #include <gtest/gtest.h>
 #include "FermionOperator.hpp"
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "IRProvider.hpp"
 #include "xacc_service.hpp"
 

quantum/observable/pauli/PauliOperator.cpp

@@ -3,7 +3,7 @@
 #include <regex>
 #include <set>
 #include <iostream>
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "xacc_service.hpp"
 
 #include <Eigen/Core>

quantum/observable/pauli/tests/PauliOperatorTester.cpp

@@ -30,7 +30,7 @@
  **********************************************************************************/
 #include <gtest/gtest.h>
 #include "PauliOperator.hpp"
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include "IRProvider.hpp"
 #include <Eigen/Dense>
 #include "xacc_service.hpp"

quantum/observable/transforms/tests/JWTester.cpp

 #include <gtest/gtest.h>
 #include "JW.hpp"
-#include "XACC.hpp"
+#include "xacc.hpp"
 #include <memory>
 #include <regex>
 #include "FermionOperator.hpp"