Cleaned up ANSTO code to merge with sinqdev.sics

This is our new RELEASE-4_0 branch which was taken from ansto/93d9a7c
Conflicts:
	.gitignore
	SICSmain.c
	asynnet.c
	confvirtualmot.c
	counter.c
	devexec.c
	drive.c
	event.h
	exebuf.c
	exeman.c
	histmem.c
	interface.h
	motor.c
	motorlist.c
	motorsec.c
	multicounter.c
	napi.c
	napi.h
	napi4.c
	network.c
	nwatch.c
	nxscript.c
	nxxml.c
	nxxml.h
	ofac.c
	reflist.c
	scan.c
	sicshipadaba.c
	sicsobj.c
	site_ansto/docs/Copyright.txt
	site_ansto/instrument/lyrebird/config/tasmad/sicscommon/nxsupport.tcl
	site_ansto/instrument/lyrebird/config/tasmad/taspub_sics/tasscript.tcl
	statusfile.c
	tasdrive.c
	tasub.c
	tasub.h
	tasublib.c
	tasublib.h

rwpuffer.c

@@ -4,6 +4,11 @@
  * copyright: see file COPYRIGHT
  * 
  * Mark Koennecke, January 2009
+ *
+ * added resizing option and MakeBigRWPuffer in order to support transfer 
+ * of large amounts of image data on few connections
+ *
+ * Mark Koennecke, August 2014
  */
 #include <stdlib.h>
 #include <string.h>
@@ -15,6 +20,7 @@ typedef struct __RWBuffer {
   int length;
   int startPtr;
   int endPtr;
+  int maxSize;
 } RWBuffer;
 /*----------------------------------------------------------------------*/
 prwBuffer MakeRWPuffer(int size)
@@ -32,9 +38,18 @@ prwBuffer MakeRWPuffer(int size)
   self->length = size;
   self->startPtr = 0;
   self->endPtr = 0;
+  self->maxSize = size;
   return self;
 }
-
+/*------------------------------------------------------------------------*/
+prwBuffer MakeBigRWPuffer(int size, int maxSize)
+{
+  prwBuffer result = MakeRWPuffer(size);
+  if(result != NULL){
+    result->maxSize = maxSize;
+  }
+  return result;
+}
 /*------------------------------------------------------------------------*/
 void KillRWBuffer(prwBuffer self)
 {
@@ -46,16 +61,51 @@ void KillRWBuffer(prwBuffer self)
   }
   free(self);
 }
+/*------------------------------------------------------------------------*/
+int CanStoreRWBuffer(prwBuffer self, void *data, int count)
+{
+  int length;
+  char *ptr;
 
+  length = self->endPtr - self->startPtr;
+  if (count + length >= self->length ) {
+    if(self->length < self->maxSize){
+      ptr = calloc(self->maxSize,sizeof(char));
+      if(ptr == NULL) {
+	  return 0;
+      }
+      memcpy(ptr,self->data, length*sizeof(char));
+      free(self->data);
+      self->data = ptr;
+      self->length = self->maxSize;
+    } else {
+      return 0;
+    }
+  }
+  return 1;
+}
 /*------------------------------------------------------------------------*/
 int StoreRWBuffer(prwBuffer self, void *data, int count)
 {
   int length;
+  char *ptr;
 
   length = self->endPtr - self->startPtr;
   if (count + length >= self->length ) {
+    if(self->length < self->maxSize){
+      ptr = calloc(self->maxSize,sizeof(char));
+      if(ptr == NULL) {
 	  printf("HELP: RWBuffer overrun!!!!\n");
-    return 0;
+	  return 0;
+      }
+      memcpy(ptr,self->data, length*sizeof(char));
+      free(self->data);
+      self->data = ptr;
+      self->length = self->maxSize;
+    } else {
+	  printf("HELP: RWBuffer overrun!!!!\n");
+	  return 0;
+    }
   }
   if (count + self->endPtr > self->length) {
     memmove(self->data, self->data + self->startPtr, length);
@@ -81,5 +131,6 @@ void RemoveRWBufferData(prwBuffer self, int count)
   if (self->startPtr >= self->endPtr) {
     self->startPtr = 0;
     self->endPtr = 0;
+    memset(self->data,0,self->length*sizeof(char));
   }
 }