netlist: code maintenance. (nw)

- leave a note that cstdlib is needed for getenv.
- Remove commented out includes
- make sure all headers are self - contained, i.e. compile

src/lib/netlist/nltypes.h

@@ -22,7 +22,6 @@
 #include "plib/ptime.h"
 #include "plib/putil.h"
 
-//#include <cstdint>
 #include <unordered_map>
 
 namespace netlist

src/lib/netlist/plib/palloc.h

@@ -13,7 +13,6 @@
 #include "ptypes.h"
 
 #include <cstddef>      // for std::max_align_t (usually long long)
-//#include <cstdlib>
 #include <memory>
 #include <type_traits>
 #include <utility>

src/lib/netlist/plib/pchrono.h

@@ -12,7 +12,6 @@
 #include "ptypes.h"
 
 #include <chrono>
-//#include <cstdint>
 
 namespace plib {
 	namespace chrono {

src/lib/netlist/plib/pfmtlog.cpp

@@ -12,7 +12,6 @@
 
 #include <algorithm>
 #include <array>
-#include <cmath>
 #include <iomanip>
 #include <iostream>
 

src/lib/netlist/plib/pmempool.h

@@ -15,7 +15,6 @@
 #include "putil.h"
 
 #include <algorithm>
-//#include <cstddef>
 #include <memory>
 #include <unordered_map>
 #include <utility>

src/lib/netlist/plib/putil.cpp

@@ -7,7 +7,7 @@
 #include "ptypes.h"
 
 #include <algorithm>
-#include <cstdlib>
+#include <cstdlib> // needed for getenv ...
 #include <initializer_list>
 
 namespace plib

src/lib/netlist/plib/vector_ops.h

@@ -11,6 +11,7 @@
 #define PLIB_VECTOR_OPS_H_
 
 #include "pconfig.h"
+#include "pmath.h"
 
 #include <algorithm>
 #include <array>